THANK YOU FOR VISITING SWEATSCIENCE.COM! My new Sweat Science columns are being published at www.outsideonline.com/sweatscience. Also check out my new book, THE EXPLORER’S GENE: Why We Seek Big Challenges, New Flavors, and the Blank Spots on the Map, published in March 2025. – Alex Hutchinson (@sweatscience) *** In the wake of Dan Lieberman’s foray into … Continue reading If heel-striking is so unnatural, why do apes do it?