" Lieberman began calculating temperatures, speed, and body weight. Soon, there it was before him: the solution to the Running Man mystery. To run an antelope to death, Lieberman determined, all you have to do is scare it into a gallop on a hot day. “If you keep just close enough for it to see you, it will keep sprinting away. After about ten or fifteen kilometers’ worth of running, it will go into hyperthermia and collapse.” Translation: if you can run six miles on a summer day then you, my friend, are a lethal weapon in the animal kingdom. We can dump heat on the run, but animals can’t pant while they gallop. “We can run in conditions that no other animal can run in,” Lieberman realized. “And it’s not even hard. If a middle-aged professor can outrun a dog on a hot day, imagine what a pack of motivated hunter-gatherers could do to an overheated antelope.” It "

― Christopher McDougall , Born to Run: A Hidden Tribe, Superathletes, and the Greatest Race the World Has Never Seen