Iron Culture presented by MASS
- Episódios
- 407
- Publicação
- semanal
- Último episódio
- 11 nov 2026
Sobre o podcast
Iron Culture was started by Eric Helms and Omar Isuf as a means of exploring the world of physical culture and attempting to distill a unified philosophy of lifting and to help listeners find greater meaning from the iron. It's now hosted by Eric Helms and Eric Trexler, who repeatedly beg Omar to return as a guest. Iron Culture focuses on dispensing practical, useful information to the listener, bouncing from history, to philosophy, to contemporary lifting culture issues, to science. The format includes casual conversations between the two hosts on a variety of topics, discussions with a panel of experts and interviews with authoritative figures in the lifting community. Iron Culture is proudly presented by the MASS Research Review.
Episódios 407
BONUS - Carbs, Nutrient Timing & Performance: What Does the Science Say? - Eric Helms & Steve Hall
In this episode, Eric Helms and Steve Hall explore the nuances of nutrient timing, carbohydrate intake, training frequency, and the importance of individual responses in bodybuilding. They emphasize practical …
Notas do episódio
In this episode, Eric Helms and Steve Hall explore the nuances of nutrient timing, carbohydrate intake, training frequency, and the importance of individual responses in bodybuilding. They emphasize practical strategies backed by science and share insights on optimizing performance and recovery.
Join us for new episodes of Iron Culture on Tuesdays at 5:30 pm eastern time!
Be sure to use code "MRR10" for 10% off your order at elitefts.com
Iron Culture is proudly presented by the MASS Research Review
massresearchreview.com
Chapters 00:00 Introduction and episode overview 01:57 Common myths about nutrient timing and personal beliefs 03:49 Training twice a day and managing muscle group overlap 06:09 Individual responses to satiety and food choices 08:04 The role of carbohydrate mouth rinsing and sensory signals 13:54 The importance of performance and individual adaptation 16:08 Myth-busting: Do you need perfect pre and post workout meals? 21:52 The impact of training volume and recovery on performance 25:49 When and why carbohydrate intake matters most 29:54 The body's complex fatigue signals and fuel utilization 32:13 The role of mouth sensing and brain signals in performance 36:09 Individual responses and the importance of self-experimentation 41:55 Summary: Keep it simple and focus on performance 44:08 Training day versus rest day nutrition considerations 48:07 The role of supplements and their actual impact 50:02 Balancing science, experience, and personal response 51:58 Final thoughts: Practical tips for bodybuilders and athletes
Ep 395: Science Communication Versus Commodification (ft. Dr. Nick Tiller)
Eric Helms hosts researcher and scientific skeptic Dr. Nick Tiller for a conversation on science communication versus "commodification" in health and fitness. After Tiller traces his path from UK sport science …
Notas do episódio
Eric Helms hosts researcher and scientific skeptic Dr. Nick Tiller for a conversation on science communication versus "commodification" in health and fitness. After Tiller traces his path from UK sport science and work with GB Olympic athletes into scientific skepticism and writing, they cover what scientific skepticism actually is and its history (from Sagan, Randi, and the Bigfoot-and-UFOs era to today's focus on wellness misinformation), how people with little expertise came to dominate the health and wellness space, and the distinction between skepticism and cynicism. From there they get into research attempting to measure critical thinking and cynicism on validated scales, which claims people choose to scrutinize and the rise of AI-driven misinformation, the case for attacking claims rather than people, and why fitness and wellness have become so tied to politics and tribalism. The back half turns to Tiller's own late and reluctant embrace of social media as a tool, his book "The Health and Wellness Lie," and closing thoughts on the reality of monetizing science communication and his parting advice to make time each night to focus your attention — to read.
Join us for new episodes of Iron Culture on Tuesdays at 5:30 pm eastern time!
Be sure to use code "MRR10" for 10% off your order at elitefts.com
Iron Culture is proudly presented by the MASS Research Review
massresearchreview.com
Chapters 0:00 Intro & business 5:00 Nick's path: sport science to skepticism 14:56 What scientific skepticism actually is 19:04 How non-experts took over wellness 28:21 Cynicism vs. skepticism 40:58 Measuring critical thinking 45:14 Which claims get scrutiny — and AI 49:38 Attack the claim, not the person 51:44 Why wellness became political 1:04:57 Rethinking social media 1:12:52 The book: "The Health and Wellness Lie" 1:24:24 Commodification & making time to read
Ep 394 - Common Movement Questions
Iron Culture co-hosts Eric Trexler and Eric Helms answer four common questions about movement and lifting. Topics include anterior pelvic tilt, tibial torsion and asymmetry, butt wink, and Smith machine squats …
Notas do episódio
Iron Culture co-hosts Eric Trexler and Eric Helms answer four common questions about movement and lifting. Topics include anterior pelvic tilt, tibial torsion and asymmetry, butt wink, and Smith machine squats. They explain why recommendations depend on symptoms, experience, and goals, and why comfortable individual movement often matters more than enforcing "perfect" movement patterns.
Join us for new episodes of Iron Culture on Tuesdays at 5:30 pm eastern time!
Be sure to use code "MRR10" for 10% off your order at elitefts.com
Iron Culture is proudly presented by the MASS Research Review
massresearchreview.com
Chapters 00:00 Intro 08:04 Anterior pelvic tilt 15:13 Why muscle-balance ratios can mislead 19:13 Tibial torsion and asymmetrical stances 29:26 A constraints-led approach 42:48 Butt wink 50:09 Squat depth, adaptation, and individual goals 58:52 Smith machine squats 01:21:44 Different audiences, different recommendations
Ep 393 - When Science Isn't Ready for "Prime Time"
Trexler and Helms step back from training specifics to talk about how science gets interpreted, communicated, and applied. Trexler opens with two anecdotes that exposed a blind spot in his own communication — a …
Notas do episódio
Trexler and Helms step back from training specifics to talk about how science gets interpreted, communicated, and applied.
Trexler opens with two anecdotes that exposed a blind spot in his own communication — a one-minute clip of a talk on the Minnesota starvation experiment that drew online backlash, and a classroom tangent on macaque calorie-restriction research that a colleague worried could nudge students toward disordered eating — both cases where true, interesting science left too much room for misapplied conclusions. That leads into the academic-versus-applied distinction (when an idea is "ready for showtime"), what Trexler has absorbed from science communicators and evolutionary-biology seminars outside fitness, the case for structuring science as story, leading with a question rather than an attack on social media, and modeling intellectual humility.
The back half covers how to tell when information isn't "ready for prime time," a worked example from a Mass article on weight-variability research, and the shared pull — across researchers, communicators, and audiences alike — to carry findings past what the evidence supports.
Join us for new episodes of Iron Culture on Tuesdays at 5:30 pm eastern time!
Be sure to use code "MRR10" for 10% off your order at elitefts.com
Iron Culture is proudly presented by the MASS Research Review
massresearchreview.com
Chapters 0:00 Intro 6:50 Interpreting, communicating & applying science 9:29 Anecdote: a clipped talk & the starvation experiment 14:21 Anecdote: the macaque calorie-restriction tangent 16:27 Academic ideas vs. "ready for showtime" 26:09 What talks outside fitness taught him 28:46 Science needs story: "Houston, We Have a Narrative" 41:35 Lead with a question, not an attack 44:53 Modeling humility: the Enoka example 52:57 When information isn't "ready for prime time" 1:00:31 Wanting science to do more than it can 1:07:02 Completing the circle & the expert's blind spot
Ep 392 - Training Frequency for Hypertrophy
Trexler and Helms dig into training frequency and hypertrophy, prompted by a wave of recent discussion and two new papers: a new original study comparing three weekly sessions of three sets against one session …
Notas do episódio
Trexler and Helms dig into training frequency and hypertrophy, prompted by a wave of recent discussion and two new papers: a new original study comparing three weekly sessions of three sets against one session of nine, and a new preprint from an independent research team utilizing the openly available data from Pelland's previously published meta-regression. They trace the long history of the frequency debate (including Helms's own shifting position), review where the science had settled, and put the current online discourse and the reanalysis under the microscope. The back half turns practical: a state-of-the-science recap, higher frequency as a tool for distributing volume and managing fatigue, and "zigging where the data zags," with a personal example of practical application.
Join us for new episodes of Iron Culture, Tuesdays at 5:30 pm eastern time!
Be sure to use code "MRR10" for 10% off your order at elitefts.com
Iron Culture is proudly presented by the MASS Research Review
massresearchreview.com
Chapters 0:00 Intro & business 5:30 Tonight's topic: frequency & hypertrophy 8:54 A history of the frequency debate 21:19 Where the science had settled 29:33 The new claim & study under the microscope 42:39 The state of the science 56:24 Distributing volume & managing fatigue 1:04:52 Zigging where the data zags (a practical application) 1:18:32 Wrap-up
BONUS: The Missing Dimension to Optimum Sports Nutrition? - Eric Helms & Steve Hall
In this episode, Eric Helms and Steve Hall explore the nature of aging, the importance of self-awareness, and practical insights into nutrition and training for bodybuilders. They share personal stories …
Notas do episódio
In this episode, Eric Helms and Steve Hall explore the nature of aging, the importance of self-awareness, and practical insights into nutrition and training for bodybuilders.
They share personal stories, scientific perspectives, and coaching tips to help listeners optimize their health and performance.
Catch new Iron Culture episodes every Tuesday at 5:30 pm eastern time!
Be sure to use code "MRR10" for 10% off your order at elitefts.com
Iron Culture is proudly presented by the MASS Research Review
massresearchreview.com
Chapters 00:00 Introduction and reflections on aging 02:03 The linear acceleration towards death 03:52 Microplastics and health concerns 05:54 Leadership, responsibility, and feeling like an adult 10:04 The impact of losing a parent and human fallibility 14:58 Coaching Winnie and competition prep insights 24:11 Meal timing, protein intake, and practical nutrition 35:50 The science of nutrient timing and meal frequency 49:49 Constraints, individualization, and coaching philosophy 59:57 Closing thoughts and future topics
Ep 391 - What Can You REALLY Learn From Pre-Steroid Era Bodybuilders? (with Dr. Conor Heffernan)
This episode looks at bodybuilding before steroids became widespread, arguing that the era is far more useful (and more complicated) than the usual "pure, simple, natty golden age" story. Drs Eric Helms and …
Notas do episódio
This episode looks at bodybuilding before steroids became widespread, arguing that the era is far more useful (and more complicated) than the usual "pure, simple, natty golden age" story. Drs Eric Helms and Conor Heffernan break down how strength sport, judging standards, gym access, and culture shaped physiques from the 1940s through the 1950s. The big takeaway is that early bodybuilding was not a direct comparison to modern natural bodybuilding. The sport was tied to Olympic weightlifting, evaluated with very different criteria, and influenced by training tools and social norms that changed the entire game.
Catch new Iron Culture episodes every Tuesday at 5:30 pm eastern time!
Be sure to use code "MRR10" for 10% off your order at elitefts.com
Iron Culture is proudly presented by the MASS Research Review
massresearchreview.com
Chapters 0:00 Intro 5:20 The "pre-steroid era" myth 13:48 Using history to break the rules 15:22 When did steroids actually arrive? 29:13 Were the silver-era physiques natural? 32:11 What the average lifter really looked like 39:33 Why old physiques look so different 43:02 Photography before Photoshop 51:37 Inside the Mr. America contest 1:05:27 Training shifts & the Weider–Hoffman rivalry 1:09:21 Equipment & accessibility 1:21:24 Why training volume was limited 1:22:41 The machine age changes everything 1:31:43 How your entry point shapes you 1:37:05 Lessons from the pre-steroid era 1:42:36 The "banned" lifts that were once normal 1:44:50 Wrap-up
Ep 390 - Is Muscle Loss Really a Big Deal?
Bodybuilders are laser-focused on retaining as much muscle as possible while dieting, and for very good reason. In that context, the smallest details matter. But what about everybody else? This episode explores …
Notas do episódio
Bodybuilders are laser-focused on retaining as much muscle as possible while dieting, and for very good reason. In that context, the smallest details matter. But what about everybody else?
This episode explores a hot take on weight loss, lean mass loss, and why the usual fear of losing muscle may be overstated in the context of successful long-term weight loss. Drs Eric Helms and Eric Trexler break down what lean mass loss actually represents, how body composition changes in obesity differ from bodybuilding or weight cycling, and why the health benefits of sustained fat loss substantially outweigh moderate losses in fat-free mass.
Catch new Iron Culture episodes every Tuesday at 5:30 pm eastern time!
Be sure to use code "MRR10" for 10% off your order at elitefts.com
Iron Culture is proudly presented by the MASS Research Review
massresearchreview.com
Chapters 00:00 Introduction 15:16 Helms' hot take on losing lean mass 19:02 Defining lean mass loss 23:28 Why obesity increases fat-free mass 30:14 Temporary versus lasting muscle loss 35:05 DEXA versus MRI measurements 42:12 Prioritizing function and quality of life 47:29 Obesity, stigma, and public health 73:35 Weighing health benefits against muscle loss
Ep 389 - What the Erics Actually Do
In this episode, Eric Helms and Eric Trexler share their current approaches to diet, training, and supplementation, emphasizing pragmatic strategies, individualization, and the importance of evidence-based …
Notas do episódio
In this episode, Eric Helms and Eric Trexler share their current approaches to diet, training, and supplementation, emphasizing pragmatic strategies, individualization, and the importance of evidence-based practice. They discuss how constraints, habits, and intrinsic motivation shape their approaches to fitness, offering valuable insights for both athletes and everyday lifters.
Catch new Iron Culture episodes every Tuesday at 5:30 pm eastern time!
Be sure to use code "MRR10" for 10% off your order at elitefts.com
Iron Culture is proudly presented by the MASS Research Review
massresearchreview.com
Chapters 00:00 Introduction and episode overview 00:04 Introduction to current fitness and diet approaches 02:13 Eric Helms discusses his role as co-director at Sprints 04:00 The importance of legacy and impact in fitness and research 06:04 Transition to practical training and nutrition strategies 10:45 Current training routines and scheduling challenges 16:05 Training volume, frequency, and adaptation 22:44 Fasted training, resilience, and human adaptability 26:16 Frequency and assessment of deloads 31:32 Personal training journeys and health challenges 36:38 Training habits, constraints, and optimizing within limits 43:20 Philosophy of motivation, identity, and long-term adherence 50:49 Balancing evidence-based principles with real-world constraints 51:46 Eric Helms discusses his current diet and body composition 52:13 The importance of a holistic approach to dieting 52:25 Adjustments in diet based on body composition and goals 53:24 Caloric intake and daily habits 55:23 Meal structure and food choices 57:20 Flexible eating and meal planning 58:55 Strategies for gaining or losing weight 01:02:03 Impact of medication and food addiction on eating behavior 01:04:51 Behavioral strategies during extreme dieting 01:07:37 Supplements and their role in performance and health 01:19:15 Cardio, step counts, and cardiovascular health 01:24:34 Training adaptations and managing physical constraints 01:29:17 Balancing resistance training, cardio, and lifestyle constraints 01:34:05 Final thoughts on personalized, evidence-based practice
BONUS - Drop Sets & Myo-Reps: The Best Way to Use Them (w/ Eric Helms & Steve Hall)
In this episode, Eric Helms and Steve Hall discuss training strategies, auto-regulation, the role of cardio in bodybuilding, and practical techniques for efficient training. They share insights from their …
Notas do episódio
In this episode, Eric Helms and Steve Hall discuss training strategies, auto-regulation, the role of cardio in bodybuilding, and practical techniques for efficient training.
They share insights from their recent training camps and personal experiences to help listeners optimize their workouts and recovery.
Catch new Iron Culture episodes every Tuesday at 5:30 pm eastern time!
Be sure to use code "MRR10" for 10% off your order at elitefts.com
Iron Culture is proudly presented by the MASS Research Review
massresearchreview.com
Chapters
00:00 Introduction and episode overview
01:55 Training environment and mental focus during camps
03:57 Eric and Steve discuss recent training experiences
06:50 Auto-regulation and its role in effective training
11:59 Time-saving techniques: drop sets, clusters, and rest pause
19:49 Cardio in bodybuilding: health benefits and recovery
29:56 Monitoring performance and avoiding overtraining
39:58 Practical tips for implementing efficient training methods
49:58 Reflections on training, recovery, and future plans
Ep 388 - What Most Bodybuilders and Their Coaches Miss (ft. Richard Collins)
In this episode, Eric Helms and Richard Collins explore the art and science of coaching, emphasizing the importance of motivation, rapport, and tailored strategies in achieving long-term success in fitness and …
Notas do episódio
In this episode, Eric Helms and Richard Collins explore the art and science of coaching, emphasizing the importance of motivation, rapport, and tailored strategies in achieving long-term success in fitness and bodybuilding. In this episode, Richard shares his extensive experience in physique sport coaching, mental performance training, and how athletes and coaches can optimize their mindset and preparation for peak performance.
Check out Richard's instagram (richard_collinscoach) to stay up to date with his work.
Catch new Iron Culture episodes every Tuesday at 5:30 pm eastern time!
Be sure to use code "MRR10" for 10% off your order at elitefts.com
Iron Culture is proudly presented by the MASS Research Review
massresearchreview.com
Chapters 00:00 Introduction and guest background 01:53 What is coaching and why it matters 04:04 The importance of motivation and internal drive 07:04 Building rapport and trust with clients 10:10 Transition from sports to bodybuilding coaching 14:53 Differences in motivation between athletes and general clients 19:56 Creating internal motivation in clients 25:07 The role of accountability and standards 29:54 The impact of emotional intelligence and relationship building 34:58 Misconceptions about tough love and discipline 40:14 The importance of understanding client context 45:04 Practical strategies for long-term adherence 49:55 Lessons learned from sports coaching 55:09 The value of humility and continuous learning 01:00:12 Closing thoughts and key takeaways
Ep 387 - Energy Cost of Building Muscle
In this episode, Eric Trexler and Eric Helms explore the energetic cost of building human skeletal muscle, discussing recent research, practical implications, and misconceptions about muscle growth and energy …
Notas do episódio
In this episode, Eric Trexler and Eric Helms explore the energetic cost of building human skeletal muscle, discussing recent research, practical implications, and misconceptions about muscle growth and energy expenditure.
Relevant papers: https://pubmed.ncbi.nlm.nih.gov/31482093/ https://pubmed.ncbi.nlm.nih.gov/37914977/ https://www.biorxiv.org/content/10.64898/2026.08.17.745156v1.full.pdf
Catch new Iron Culture episodes every Tuesday at 5:30 pm eastern time!
Be sure to use code "MRR10" for 10% off your order at elitefts.com
Iron Culture is proudly presented by the MASS Research Review
massresearchreview.com
Chapters 00:00 Introduction 01:52 Powerlifting shout-out 11:55 Introduction to new paper on energetic cost of building muscle 20:01 Components of muscle tissue building and their energy costs 22:59 Practical implications of the 3500 calorie rule 30:05 The five additive components of muscle growth energy cost 33:49 Variability in individual energy expenditure responses 40:12 Limitations and future directions in research 50:10 Summary and concluding thoughts
Ep 386 - Sleep, Hypertrophy, and Creatine
Trexler and Helms dig into sleep and how it intersects with body composition and supplementation. They open on the sleep-and-lifting landscape, then work through the frequently cited 2010 study on insufficient …
Notas do episódio
Trexler and Helms dig into sleep and how it intersects with body composition and supplementation. They open on the sleep-and-lifting landscape, then work through the frequently cited 2010 study on insufficient sleep and fat loss, laying out its design and the details behind its dramatic-sounding numbers. From there they discuss what the broader literature does and doesn't establish, the acute effects of sleep restriction on power, skill, and pain perception, and observational data — including sleep patterns in hunter-gatherer societies and among elite athletes — plus the relationship between sleep duration and sleep efficiency. The back half turns to supplementation. They trace the history of research on creatine and sleep, from early findings that creatine might reduce sleep need to newer work on brain creatine under sleep deprivation. This leads into a crossover trial testing caffeine and creatine against a sleep-deprivation cognitive challenge, its findings on rugby passing accuracy, and how to interpret an isolated positive result on a little-studied question. They cover a more recent high-dose replication, then close with the practical side — creatine dosing, the common report that creatine disrupts sleep, and caffeine timing — before wrapping up.
Join us for a live recording of Iron Culture! We go live Tuesdays at 5:30 pm eastern time.
Be sure to use code "MRR10" for 10% off your order at elitefts.com
Iron Culture is proudly presented by the MASS Research Review massresearchreview.com
Chapters 0:00 Intro 9:44 Sleep & body composition 11:16 Unpacking the famous 2010 sleep study 20:52 The blind spot in the sleep literature 23:04 Sleep restriction, power, skill & pain 27:20 Sleep duration vs. sleep efficiency 31:45 The big takeaway on sleep & gains 34:57 Creatine & sleep: the research history 41:22 The caffeine vs. creatine study 44:47 What the study found 54:21 A newer high-dose replication 1:08:26 Practical application: dosing, timing & sleep complaints 1:15:44 Wrap-up
Ep 385 - Do Studies on Untrained Lifters Apply to Trained Lifters?
Trexler and Helms dig into Helms's new MASS article, "Are studies on untrained lifters irrelevant to trained lifters?" It's built around a new umbrella review by Andy Fry and colleagues. The recurring internet …
Notas do episódio
Trexler and Helms dig into Helms's new MASS article, "Are studies on untrained lifters irrelevant to trained lifters?" It's built around a new umbrella review by Andy Fry and colleagues. The recurring internet claim is that most exercise research is done on untrained people, so a trained lifter is "built different" and the findings don't apply. The hosts unpack why that's mostly wrong. They start with the messy problem of defining how "trained" someone is. Then they discuss Fry's review, which reports that roughly 70% of resistance training study participants are sedentary or untrained, with fewer than 500 out of nearly 19,000 participants counting as genuinely well-trained. But the key focus of the episode is that this doesn't invalidate the research: what makes a beginner grow more will also make an advanced lifter grow more — the difference is rate, not mechanism.
Iron Culture is proudly presented by the MASS Research Review. Mostly because Helms and Trex are co-owners. massresearchreview.com
If you're in the market for some new (ultra-high-quality) gym gear or apparel, be sure to use code "MRR10" for a 10% discount over at elitefts.com
If you'd like to submit a question for a future episode, head over to: massresearchreview.com/ironculture
Chapters 0:00 Intro 8:25 The article: do untrained studies apply? 11:31 What does "trained" even mean? 22:26 How researchers try to define training status 25:51 Fry's approach & the McKay tiers 28:07 A review of reviews: mapping the literature 32:24 The finding: 70% untrained 37:46 Is that actually a problem? 43:44 Where meta-analyses fall short 51:27 Dose, stimulus & the maintenance threshold 58:27 Realistic rates of progress & goal-setting 1:14:51 Wrap-up: you don't need perfect
BONUS: Bulking Is Dead - Eric Helms & Steve Hall
In this episode, Eric Helms and Steve Hall explore the nuances of body recomposition, optimal bulking and cutting strategies, and the science behind muscle gain and fat loss. They discuss recent research …
Notas do episódio
In this episode, Eric Helms and Steve Hall explore the nuances of body recomposition, optimal bulking and cutting strategies, and the science behind muscle gain and fat loss. They discuss recent research, practical insights, and debunk common myths to help athletes optimize their training and nutrition.
Iron Culture is proudly presented by the MASS Research Review. Mostly because Helms and Trex are co-owners. massresearchreview.com
If you're in the market for some new (ultra-high-quality) gym gear or apparel, be sure to use code "MRR10" for a 10% discount over at elitefts.com
If you'd like to submit a question for a future episode, head over to: massresearchreview.com/ironculture
Chapters 00:00 Audio Troubles and Nostalgia 02:47 Heat and Body Temperature During Massing 05:58 Gaining Weight: Personal Experiences and Insights 09:02 Recomposition: Understanding the Nuances 11:59 Surplus vs. Maintenance: The Anabolic Debate 14:45 The Role of Body Composition in Muscle Gain 18:05 Deficits and Muscle Gain: A Closer Look 20:53 The Impact of Training Experience on Gains 23:50 Psychology of Body Image and Muscle Growth 34:30 Evolution of Perspectives in Bodybuilding 35:30 The Surplus Dilemma: Muscle Gain vs. Fat Gain 39:35 Post-Show Recovery: Finding the Balance 43:43 The Impact of Body Fat on Muscle Growth 46:26 Psychological Aspects of Bodybuilding and Recovery 51:20 Understanding Muscle Memory and Recovery 01:04:31 The Complexity of Body Composition Studies
Ep 384 - Is Ultrasound Lying About Your Gains?
A methods-focused episode about how muscle and body-composition measurements can mislead you when reading the research. The main event is a new Balshaw and colleagues paper concluding that ultrasound muscle …
Notas do episódio
A methods-focused episode about how muscle and body-composition measurements can mislead you when reading the research. The main event is a new Balshaw and colleagues paper concluding that ultrasound muscle thickness is a poor index of MRI-measured muscle growth. Trexler and Helms argue this shouldn't be read as "throw out all ultrasound research" — the real culprit is that muscle thickness is a crude one-dimensional snapshot with measurement error large enough to swamp the small changes seen in typical short studies, whereas MRI captures growth in more dimensions with better fidelity. They walk through why comparing across different dimensions and different devices matters, what researchers can do about it (bigger doses, larger samples, multiple measurements), and use the famous "sleep restriction kills your gains by 60%" study as an example of over-reading a tiny difference in ten people.
The second half turns to DEXA. Prompted by someone confused that DEXA fat mass didn't line up with the 3,500-calorie rule, they explain DEXA's three-compartment model, why it measures fat mass rather than adipose tissue, and why lean soft tissue readings are so sensitive to hydration. The practical upshot: don't build your worldview on a kilogram of day-to-day DEXA noise, be cautious using DEXA to estimate energy status, and understand that flattening a three-dimensional body into a two-dimensional scan introduces real limits. They close with an extended, tongue-in-cheek bit about trademarking "muscle journey" dimensions.
Iron Culture is proudly presented by the MASS Research Review. Mostly because Helms and Trex are co-owners. massresearchreview.com
If you're in the market for some new (ultra-high-quality) gym gear or apparel, be sure to use code "MRR10" for a 10% discount over at elitefts.com
If you'd like to submit a question for a future episode, head over to: massresearchreview.com/ironculture
Chapters 0:00 Intro 5:57 The paper: is ultrasound a poor muscle-growth measure? 18:04 What muscle thickness actually captures 25:38 Measurement error vs. a tiny signal 31:16 Different dimensions, different devices 37:52 What researchers should do about it 39:26 Case study: does sleep loss "kill gains"? 47:28 On to DEXA: where this started 53:26 How DEXA works & why fat mass ≠ adipose tissue 1:02:15 Why methods don't always agree 1:11:06 Water weight & the whooshing scale 1:16:43 Estimating energy status from DEXA 1:19:36 Wrap-up
Ep 383 - Q&A: Imbalances, Fatigue, & REDs
In today's Q&A episode, the Erics work through a few listener questions. First they tackle upper/lower body imbalance — why lagging body parts usually call for improving training quality before adding volume …
Notas do episódio
In today's Q&A episode, the Erics work through a few listener questions. First they tackle upper/lower body imbalance — why lagging body parts usually call for improving training quality before adding volume, and why standout muscle groups can be maintained on surprisingly little work. Next is a long discussion on managing fatigue and exercise sequencing in high-frequency, non-traditional splits, including why the "48 hours between muscle groups" rule is more dogma than requirement and how to think about fatigue as continuous rather than categorical. The episode closes with a multifaceted question on REDs (relative energy deficiency in sport) — what it is, its warning signs, and the limits of what bloodwork can actually tell you.
Iron Culture is proudly presented by the MASS Research Review. Mostly because Helms and Trex are co-owners. massresearchreview.com
If you're in the market for some new (ultra-high-quality) gym gear or apparel, be sure to use code "MRR10" for a 10% discount over at elitefts.com
If you'd like to submit a question for a future episode, head over to: massresearchreview.com/ironculture
Chapters 0:00 Intro 4:25 Fixing upper/lower body imbalance 6:39 Quality before quantity 9:03 Why standout muscles hold with less work 12:25 Fatigue & sequencing high-frequency training 17:58 How to actually sequence back-to-back days 23:56 Lifting "rules" set in concrete 26:09 Are lifters too worried about fatigue? 39:34 REDs (relative energy deficiency in sport) 40:51 Liver enzymes, creatinine & training stress 46:07 Cholesterol/LDL & other markers 1:00:21 Wrap-up
Ep 382 - The Science of Building Bone (ft. Dr.Lora Giangregorio)
The Erics sit down with bone health expert Dr. Lora Giangregorio, a professor of kinesiology at the University of Waterloo, to unpack what's actually known about how bone adapts to resistance training. The …
Notas do episódio
The Erics sit down with bone health expert Dr. Lora Giangregorio, a professor of kinesiology at the University of Waterloo, to unpack what's actually known about how bone adapts to resistance training. The conversation covers why bone changes so slowly, the many sources of measurement error in DEXA scans, and why so much of the exercise-and-bone literature is underpowered and hard to interpret. Dr. G makes a central practical case: for building bone, the message shouldn't be "lift heavy" but rather "work hard." Emphasizing high effort over intimidating absolute loads lowers the barrier to entry, especially for older and osteoporotic populations, while still driving progressive overload. She argues the best current bet is combining moderate-to-high-intensity resistance training with impact work, introduced gradually on a foundation of strength. Along the way she debunks popular but weakly supported interventions, including weighted vests and whole-body vibration platforms, and discusses the difference between biological aging and simple chronic inactivity in bone loss.
Iron Culture is proudly presented by the MASS Research Review. Mostly because Helms and Trex are co-owners. massresearchreview.com
If you're in the market for some new (ultra-high-quality) gym gear or apparel, be sure to use code "MRR10" for a 10% discount over at elitefts.com
If you'd like to submit a question for a future episode, head over to: massresearchreview.com/ironculture
Chapters 0:00 Intro 4:13 Meet Dr. Lora Giangregorio 7:44 Why bone adapts so slowly 11:42 DEXA error & why to be skeptical 23:07 Does load matter? 33:58 "Heavy" vs "hard" & barrier to entry 42:42 What is impact training? 47:31 The science communication problem 52:55 The weighted vest myth 58:13 Muscle pull, compression & light loads 1:06:48 Do vibration platforms work? 1:09:54 Aging vs. inactivity 1:15:46 Drugs & HRT for bone 1:20:24 How the medications work 1:24:27 Wrap-up & where to find Dr. G
BONUS: Are Fitness Trackers Worth It? - Eric Helms & Steve Hall
In this episode, Steve Hall and Eric Helms explore the nuances of training, recovery, and the use of technology in bodybuilding. They share insights on managing recovery, the limitations of fitness trackers …
Notas do episódio
In this episode, Steve Hall and Eric Helms explore the nuances of training, recovery, and the use of technology in bodybuilding. They share insights on managing recovery, the limitations of fitness trackers, and the importance of personalized approaches to training and nutrition.
If you're in the market for some new (ultra-high-quality) gym gear or apparel, be sure to use code "MRR10" for a 10% discount over at elitefts.com
Iron Culture is proudly presented by the MASS Research Review. Mostly because Helms and Trex are co-owners. massresearchreview.com
Chapters 00:00 Caffeine Consumption and Its Perception 03:02 Dietary Habits and Food Preferences During Prep 06:02 Understanding Energy Levels and Recovery 08:58 Psychological Aspects of Eating Behaviors 11:59 Navigating Off-Season and Recovery 15:05 Bodybuilding vs. Classic Physique Aspirations 30:29 The Journey to a Pro Card 36:06 Understanding Competitiveness in Bodybuilding 42:42 The Role of Fitness Trackers 49:29 Data-Driven Decisions in Bodybuilding 01:05:45 Recovery Strategies and Their Effectiveness
Ep 381 - Q&A: GLP-1s, Tendon Training, & Rep Ranges
Trexler and Helms open with an overview of the new MASS issue (body recomposition, a protein consensus paper, reverse dieting) and a powerlifting World Championships recap before diving into a rapid-fire …
Notas do episódio
Trexler and Helms open with an overview of the new MASS issue (body recomposition, a protein consensus paper, reverse dieting) and a powerlifting World Championships recap before diving into a rapid-fire listener Q&A. Along the way they tackle whether protein needs scale with training volume, the science behind a supplement that's been called "Nature's Ozempic," evaluating protein quality based on food labels, dieting while chasing endurance adaptations, protecting tendons and bone when shifting from powerlifting to bodybuilding, and the myths around rep ranges and muscle shape. The back half centers on GLP-1 drugs like tirzepatide — their surprising off-label effects, who's actually a good candidate, and whether they should be banned in natural bodybuilding — before closing with a rapid-fire round on lengthened partials and the volume-versus-frequency question.
Be sure to use code "MRR10" for 10% off your order at elitefts.com
Iron Culture is proudly presented by the MASS Research Review
massresearchreview.com
Chapters 0:00 — Intro, audio gremlins & the new MASS issue 6:40 — Powerlifting news: World Championships & squat records 11:48 — Do protein requirements scale with training volume? 16:59 — PGX: is "Nature's Ozempic" actually legit? 22:49 — Protein quality & % Daily Value on food labels 26:47 — Chasing endurance adaptations while dieting in a deficit 36:52 — Protecting tendons & bone when leaving powerlifting 45:37 — Rep ranges, muscle "hardness" & fiber-type myths 50:21 — Tirzepatide & GLP-1s: are they really the wonder drug? 1:01:08 — Should GLP-1s be banned in natural bodybuilding? 1:11:11 — Rapid fire: lengthened partials & the volume/frequency question 1:15:39 — Wrap-up & sign-off
Ep 380 - Bulking, Cutting, and Recomping
In this Q&A episode, Eric Trexler and Eric Helms open with a recap of their trip to Norway and announce a new MASS partnership with AFPT International. They then work through a string of listener questions that …
Notas do episódio
In this Q&A episode, Eric Trexler and Eric Helms open with a recap of their trip to Norway and announce a new MASS partnership with AFPT International. They then work through a string of listener questions that end up forming a surprisingly cohesive arc: how much total daily energy expenditure actually varies between people, RED-S and low energy availability, what really drives satiety, and a deep dive into building or retaining muscle in a calorie deficit. The back half tackles body recomposition head-on, why the rigid "bulk vs. cut" mindset comes largely from competitive and enhanced bodybuilding, and how natural powerlifters demonstrate that recomp is closer to the default state than most people assume.
Iron Culture is proudly presented by the MASS Research Review. Mostly because Helms and Trex are co-owners. massresearchreview.com
If you're in the market for some new (ultra-high-quality) gym gear or apparel, be sure to use code "MRR10" for a 10% discount over at elitefts.com
If you'd like to submit a question for a future episode, head over to: massresearchreview.com/ironculture
Chapters 0:00 - Intro 10:24 - Q&A begins: Is maintaining 2400 cal "above the mean"? (TDEE variance) 17:00 - RED-S, low energy availability & the female athlete triad 23:10 - What actually drives satiety? 33:14 - Building muscle in a deficit: protein needs & why muscle is lost 49:31 - What bulking studies tell us about surplus size 55:40 - Listener case study: bulk first or recomp while cutting? (Natalia) 1:01:15 - Where the "bulk vs. cut" mindset really comes from 1:12:24 - Powerlifting as a case study in recomposition 1:16:44 - Do drugs break the rules? PEDs & nutrient partitioning 1:18:34 - Wrap-up
Ep 379 - Behind the Scenes (Iron Culture Documentary) ft. Omar Isuf
In a monumental moment for the Iron Cult, OMAR RETURNS for a guest appearance. In this episode, Omar Isuf and Eric Helms discuss the journey of creating the ambitious Iron Culture documentary, highlighting …
Notas do episódio
In a monumental moment for the Iron Cult, OMAR RETURNS for a guest appearance.
In this episode, Omar Isuf and Eric Helms discuss the journey of creating the ambitious Iron Culture documentary, highlighting behind-the-scenes challenges, personal sacrifices, and the passion driving their project. They reflect on the collaborative effort, funding, and the cultural significance of their work, offering insights into the process of producing a self-funded, passion-driven documentary. In this episode, Omar Isuf and Eric Helms reflect on the impactful moments of their recent documentary, the evolution of the fitness community, and the importance of intentionality and community in the space. They share behind-the-scenes stories, insights on social media's influence, and the enduring value of authentic connection.
If you're in the market for some new (ultra-high-quality) gym gear or apparel, be sure to use code "MRR10" for a 10% discount over at elitefts.com
Iron Culture is proudly presented by the MASS Research Review. Mostly because Helms and Trex are co-owners. massresearchreview.com
Chapters 00:00 Introduction 01:48 Documentary Journey and Collaboration 13:50 Reflections on the Process 30:35 Documentary Creation and Community Support 42:44 Reflections on Personal Growth and Legacy 57:28 Support throughout the process 01:07:12 The Evolution of Fitness Content and Its Challenges 01:14:06 Navigating the Fitness Landscape Today 01:25:34 Closing Thoughts
BONUS: Revive Stronger - Fatigue, Progress & The Psychology of Bodybuilding (ft. Steve Hall)
Eric Helms and Steve Hall discuss training strategies, deloads, body image, and the cultural aspects of bodybuilding, sharing insights from their experiences and recent projects like the bodybuilding …
Notas do episódio
Eric Helms and Steve Hall discuss training strategies, deloads, body image, and the cultural aspects of bodybuilding, sharing insights from their experiences and recent projects like the bodybuilding documentary.
Chapters 00:00 Introduction and Banter 03:00 Connecting with Omar and Rascal 05:58 The Essence of Bodybuilding and Community 08:49 The Documentary Journey 12:06 Philosophical Reflections on Sports 14:48 The Impact of the Documentary 18:06 Personal Stories and Connections 21:02 Final Thoughts and Future Projects 30:09 The Journey of Giving Back 33:23 Reflections on Life and Legacy 36:12 Future Competitive Aspirations 41:41 The Evolving Perspective on Progress 54:59 Navigating Fatigue and Deloading Strategies 01:07:44 The Importance of Auto-Regulation
Ep 378 - Social Media Protein Debates
Eric Trexler and Eric Helms recently found themselves in the middle of a debate about optimal protein intakes, all initiated by a social media post from Stu Phillips (a leading researcher in the area). In this …
Notas do episódio
Eric Trexler and Eric Helms recently found themselves in the middle of a debate about optimal protein intakes, all initiated by a social media post from Stu Phillips (a leading researcher in the area). In this episode, they dive into how that scientific discourse played out, the nuances of protein intake, and the implications for recreational lifters and bodybuilders alike. They discuss the complexities of scientific data interpretation, public messaging, and practical recommendations for optimal protein consumption.
If you're in the market for some new (ultra-high-quality) gym gear or apparel, be sure to use code "MRR10" for a 10% discount over at elitefts.com
Iron Culture is proudly presented by the MASS Research Review. Mostly because Helms and Trex are co-owners. massresearchreview.com
Chapters 00:00 Intro 06:13 Social Media Debate on Upper Limits of Protein Intake 13:07 Analysis of Stu Phillips' Post and Scientific Discourse 24:06 Review of Tagawa Meta-Regression Studies 34:58 Nunes Data and Recent Research Insights 39:06 The Refalo et al paper 53:49 Balancing Nuance and Public Messaging 01:03:00 Concluding Thoughts on Science Communication
Ep 377 – MRV/MAV, Diet Breaks & Refeeds
Back in episode 375, Helms and Trex briefly mentioned a few "evidence-based fitness" topics for which their views have evolved over the years. In hindsight, they didn't give a few of those topics the time …
Notas do episódio
Back in episode 375, Helms and Trex briefly mentioned a few "evidence-based fitness" topics for which their views have evolved over the years. In hindsight, they didn't give a few of those topics the time, attention, and explanation they deserve. So in this episode, Helms and Trex take a closer look at two key topics: maximum recoverable (or adaptable) training volume, and various approaches to strategically manipulating leptin levels (such as refeeds and diet breaks).
If you're in the market for some new (ultra-high-quality) gym gear or apparel, be sure to use code "MRR10" for a 10% discount over at elitefts.com
Iron Culture is proudly presented by the MASS Research Review. Mostly because Helms and Trex are co-owners. massresearchreview.com
Chapters
00:00 Intro
04:11 The origins of MRV/MAV
07:08 Updated perspectives on MRV/MAV
14:26 Practically applying MRV/MAV
17:11 Helms' current volume adjustments
24:30 Updating models in science
29:20 The importance of leptin
32:42 The origins of Trex's interest in manipulating leptin
38:47 Running studies on diet breaks and refeeds
44:27 Recent meta-analysis on intermittent dieting strategies
50:19 Trex's current perspective on refeeds and diet breaks
53:47 Behavioral versus physiological effects
59:09 Contextual use of intermittent dieting
1:06:34 Wrapping up
Ep 376 - Weight Loss Resistance
Join us for a rare Iron Culture episode with co-hosts who are not only on the same continent, but actually in the same ROOM. Helms and Trexler are in Australia for the Sports Nutrition Association Annual …
Notas do episódio
Join us for a rare Iron Culture episode with co-hosts who are not only on the same continent, but actually in the same ROOM. Helms and Trexler are in Australia for the Sports Nutrition Association Annual Conference, so they got together to record an episode about Trex's presentation topic: resistance to weight loss. Specifically, why being a true "outlier" who is resistant to weight loss efforts is quite rare, particularly when looking at the energy expenditure side of the equation.
If you're in the market for some new (ultra-high-quality) gym gear or apparel, be sure to use code "MRR10" for a 10% discount over at elitefts.com
Iron Culture is proudly presented by the MASS Research Review. Mostly because Helms and Trex are co-owners. massresearchreview.com
Chapters 00:00 Introduction 07:09 Tracking errors and energy absorption 22:21 Myths and realities related to medical conditions 50:48 Metabolic adaptation & exercise energy compensation 56:36 Weight loss friction as a spectrum
Ep 375 - Humility in Science
Join Drs Eric Helms and Eric Trexler as they discuss the importance of humility in science, and a few key areas where their perspectives have changed over the years. If you're in the market for some new …
Notas do episódio
Join Drs Eric Helms and Eric Trexler as they discuss the importance of humility in science, and a few key areas where their perspectives have changed over the years.
If you're in the market for some new (ultra-high-quality) gym gear or apparel, be sure to use code "MRR10" for a 10% discount over at elitefts.com
Iron Culture is proudly presented by the MASS Research Review. Mostly because Helms and Trex are co-owners. massresearchreview.com
Chapters 00:00 Intro 13:11 The Iron Culture Documentary Release 18:03 Criticism and Public Perception 28:20 Intellectual Humility and Changing Perspectives 38:33 Evolving Views on Nutrition and Training
BONUS: Stronger Culture - The Protein Ceiling: Real or Not a Needle Mover? (ft Eric Helms & Steve Hall)
Join Steve Hall and Eric Helms as they explore the nuances of bodybuilding, nutrition, and training strategies. From caffeine timing and body composition tracking to posing techniques and mental models, this …
Notas do episódio
Join Steve Hall and Eric Helms as they explore the nuances of bodybuilding, nutrition, and training strategies. From caffeine timing and body composition tracking to posing techniques and mental models, this conversation offers practical insights for athletes and enthusiasts aiming to optimize their performance and physique.
Iron Culture is presented by the MASS Research Review massresearchreview.com
If you're in the market for some new gym gear or apparel, be sure to use code "MRR10" for a 10% discount at elitefts.com
Chapters 00:00 Morning Rituals: Caffeine Choices and Preferences 02:43 Caffeine Cycling: Strategies for Bodybuilding Performance 05:19 Caffeine and Sleep: Finding the Right Balance 08:27 Diet Sodas: The Hidden Caffeine Dilemma 10:52 Navigating Post-Show Eating: The Recovery Phase 13:53 Protein Intake: Debating the Optimal Amount 16:45 Training vs. Nutrition: Prioritizing Muscle Gain 19:26 Understanding Protein Recommendations: Context Matters 22:17 The Importance of Training Intensity 25:06 Blue Light Blockers: Effects on Sleep Quality 35:20 Blue Light Blockers and Sleep Quality 37:11 Body Weight and Recovery Insights 39:11 Stage Weight and Body Composition Changes 41:34 Tracking Progress: Measurements and Photos 45:10 The Importance of Posing in Bodybuilding 50:39 Online Coaching and Posing Techniques
Ep 374 - Processing, Palatability, and Bingeing
This episode begins with a slightly defensive rant by Eric Trexler, followed by a very defensive rant by Eric Helms. After that, they dive into new research uncovering the complexities of ultraprocessed foods …
Notas do episódio
This episode begins with a slightly defensive rant by Eric Trexler, followed by a very defensive rant by Eric Helms. After that, they dive into new research uncovering the complexities of ultraprocessed foods, their impact on obesity, binge eating, and the food industry's role in creating and promoting hyperpalatable ultraprocessed foods.
Iron Culture is proudly presented by the MASS Research Review (massresearchreview.com)
If you're in the market for some high-quality gym gear or apparel, be sure to support our friends at elitefts.com and use code "MRR10" for a 10% discount.
Chapters 00:00 Intro 10:14 Trexler & Helms respond to social media criticism 15:48 Slightly defensive rant by Trexler 23:10 Extremely defensive rant by Helms 32:25 Roles in The Ecosystem of Science Communication 41:39 Exploring the Impact of Ultra-Processed Foods 46:20 Understanding Ultra-Processed Foods and Their Nuances 51:16 The Role of Food Processing in Feeding a Growing Population 55:53 Hyper-Palatable Foods and Their Effects on Eating Behavior 59:07 The Evolution of Eating Disorder Treatment Perspectives 01:04:30 The Relationship Between Hyper-Palatable Foods and Binge Eating 01:09:05 Neurophysiology of Food Consumption and Addiction 01:12:20 Conclusions & practical applications for food selection
Ep 373 - Does Bone Predict Hypertrophy?
This episode begins with a discussion about the importance of scientific rigor in fitness research and science communication. After that, hosts Eric Trexler and Eric Helms discuss the relationship between …
Notas do episódio
This episode begins with a discussion about the importance of scientific rigor in fitness research and science communication. After that, hosts Eric Trexler and Eric Helms discuss the relationship between skeletal structure and muscle growth, including whether or not your bone structure can predict how much muscle you gain in response to training or your maximum level of muscularity.
Iron Culture is proudly presented by the MASS Research Review (massresearchreview.com)
If you're in the market for some high-quality gym gear or apparel, be sure to support our friends at elitefts.com and use code "MRR10" for a 10% discount.
Chapters 00:00 Intro 11:19 Expert Creep and Science Communication 21:22 Responsibly Expanding Your Domain of Expertise 31:42 Exploring Bone Structure and Muscle Growth 32:51 Study Overview: Bone Characteristics and Hypertrophy 41:13 Interpreting the results of a new study 47:50 Methodological nuances 58:30 Hypertrophy versus total muscularity 01:02:48 Finding the right sport for your frame and bone structure 01:12:23 Practical applications
Aqui estão os 40 episódios mais recentes de 407. Os mais antigos estão no feed do podcast.
Podcasts parecidos
Mais podcasts de Saúde e fitness
Este podcast é seu?
Confirme com uma entrada no seu feed: você recebe um código aqui, adiciona como podcast:txt no canal do seu feed e nós verificamos. Depois disso, seu podcast aparece como “verificado” no SoundNode.