Walking shaped humans into who we are—and it’s one of the simplest ways to improve health, mood, and longevity right now. In this episode of Two Percent, Michael sits down with evolutionary geneticist Dr. Melissa Ilardo and writer Foster Kamer to explore what endurance science says about how far humans can actually go, why the brain often quits before the body, and how small daily choices compound into massive long-term outcomes.

We cover the real research behind step counts (including why the 10,000 number is a myth), the minimum effective dose that meaningfully improves health, and how to make walking effortless by stacking it into things you already do. Plus: persistence hunting, sleep differences that change performance, and what ultra-endurance reveals about mindset.

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Two Percent is hosted by Michael Easter. Today’s episode was produced by Joey Fischground, Robbie Hiser, Dana Brawer and Julia Nutter. From Kaleidoscope, our executive producers are Mangesh Hattikudur, Kate Osborn and Julia Nutter. From iHeart, our executive producers are Katrina Norvell and Nikki Ettore. Kaleidoscope’s Head of Video is Maria Paz Mendez Hodes. Our editor is Nick Pomeroy. Our theme music is by Heater Manager.

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