Marcus Filly joins John to talk about his journey from pre-med student to CrossFit Games athlete and the creation of Functional Bodybuilding. They dig into why experience often outpaces “evidence-based” fitness science, the rise of Hyrox and hybrid athletes, and how to build a body that performs for life. This one is a masterclass in blending intellect, intuition, and intensity in the pursuit of lifelong performance.

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