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Ted, where are your FiveFingers?” I asked. “Don’t need ’em,” he said. “I made a deal with Caballo that if I handled this hike, he wouldn’t get mad anymore if I went barefoot.” “He rigged the bet,” I said. “This is like running up the side of a gravel pit.” “Humans didn’t invent rough surfaces, Oso,” Ted said. “We invented the smooth ones. Your foot is perfectly happy molding itself around rocks. All you’ve got to do is relax and let your foot flex. It’s like a foot massage. Oh, hey!” he called after us as Eric and I pulled ahead. “Here’s a great tip. Next time your feet are sore, walk on slippery stones in a cold creek. Unbelievable!
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Christopher McDougall (Born to Run: A Hidden Tribe, Superathletes, and the Greatest Race the World Has Never Seen)