A year ago, Michael Easter walked 850 miles across southern Utah in 45 days — about a marathon every day. Dr. Andy Galpin turned him into a lab rat, studying his body before, during, and after his 45 days in the desert. What he found surprised both of them.

In this episode, Michael sits down with Dr. Andy Galpin — the world’s top performance scientist and co-founder of Absolute Rest. He is the guy MVPs, Cy Young winners, and Hall of Famers call when something isn't working. They go deep on what 850 miles in 45 days actually does to a human body, what wearables get right and where they fail, and the 5-pillar exercise protocol that makes a body ready for anything.

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 and Kate Osborn and Julia Nutter. From iHeart, our executive producers are Katrina Norvell and Nikki Ettore. Our Head of Video is Maria Paz Mendez Hodes. This episode was edited by Joey Fischground. Our theme music is by the Heater Manager.