Run Long Run Healthy

The New Science of RUNNING ENDURANCE: Durability, Fatiguability, Repeatability, Resilience

July 21, 2026·37 min
Episode Description from the Publisher

We do blood testing with RYTHM: Rythm is offering our listeners 15% off your first month and free shipping at https://RYTHM.HEALTH/RLRHBrought to you by ProBio Nutrition - your all-in-one daily supplement for runners. Get 40% off with code RLRH (and an additional 10% off + free shipping with a subscription) ➡️https://bit.ly/ProBioRLRHBrady and Thomas break down the new viewpoint paper on endurance whose co-authors include Michael Joyner: https://journals.physiology.org/doi/pdf/10.1152/japplphysiol.00343.20250:00 Introduction – The 4 Components of Fatigue Resistance0:39 What Is Durability? (The Joiner Model Revisited)4:00 Sponsor: ProBio Nutrition5:12 How to Use These 4 Terms to Find Your Weaknesses5:57 #1: Durability – Holding Your Physiology Together at Constant Pace8:32 How to Train for Better Durability11:30 #2: Fatiguability – Performance Loss Under Variable Intensity14:38 Sponsor: RYTHM Health (At-Home Blood Testing)17:11 #3: Repeatability – Can You Hit the Same Splits Every Interval?18:36 How to Train for Better Repeatability22:37 #4: Resilience – Performing Under Unexpected Conditions23:55 Amby Burfoot's 1968 Boston Win: A Case Study in Resilience26:47 How to Train for Resilience (Steve Magnus's Secret Tactic)28:31 The Danger of Being Over-Optimized on Race Day29:52 Thomas & Brady's Own Strengths and Weaknesses35:45 Resilience: The Last Unmeasurable Variable in Endurance Sport37:04 Wrap-Up

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