The Infirmary | Fixing Broken Endurance Athletes
Jul 2, 2026 · 54 min · 10 segments
Simon Marshall trained the brains of endurance athletes for a living, and in this conversation he makes the case that the mental side of sport is the part most of us skip — right up until it costs us…
Simon MarshallGuestChris BaggHostHey campers, welcome to another episode of The Infirmary, where my guests and I debunk myths and lead you instead to the best practices in endurance sport.
I'm your host, Chris Bagg, and I've been in sports my whole life, an endurance athlete for over 20 years, a coach for 17, and a professional triathlete for 15 of those years.
During that time, I've noticed that the endurance world loves to make simple concepts complex, or it oversimplifies nuanced or complicated topics, usually in the pursuit of profit.
Here at the infirmary, I'm committed to helping you find a clear, simple path through the endurance thickets so you can focus on what matters.
Improving at your sport, avoiding injury or burnout, and discovering the joys of healthy competition, participation, and community.
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