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.

Email us at media@twopct.com.

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.

See omnystudio.com/listener for privacy information.

From New York Times bestselling author and journalist Michael Easter comes a twice-weekly deep dive into the science of living better by doing things the hard way. Building on the insights of his #1 Substack and acclaimed books, Easter balances rigorous evidence with a healthy dose of skepticism to cut through the noise of the modern wellness industry. Whether he’s interviewing elite explorers and Harvard biologists or deconstructing the truth about longevity and metabolic health, this isn't a show for "biohacking" perfectionists—it’s a grounded, often humorous guide for real people looking to build resilience and agency in an increasingly comfortable world. From ancient wisdom to cutting-edge research, listen to Two Percent to discover why the antidote to modern malaise is often found in the challenges we’ve been taught to avoid.

See omnystudio.com/listener for privacy information.