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Steph O'Rourke

An exercise scientist and former track sprinter who specializes in female physiology and longevity-focused training.

Circuit updated June 29, 2026

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Exercise scientist StephOrrourke says 58-year-old women gained more mitochondrial efficiency from sprinting than 18-year-olds did
The Diary of a CEO·Health

Exercise scientist StephOrrourke says 58-year-old women gained more mitochondrial efficiency from sprinting than 18-year-olds did

The guest making the case that your VO2 max decline is not aging, it is just neglect, and that the fix is embarrassingly simple.

Jun 29, 2026