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441: The Latest Science on Double Threshold Training, with Siren and Dr. Stephen Seiler

September 17, 2026 · 1 h 10 min

Show notes

First as an elite runner and now as a physiologist, Siren Seiler has been intrigued by “double threshold” training. Today we discuss the results of her master’s thesis: “Physiological and perceptual stress responses to repeated single‑ and double‑threshold interval training.”

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