This is a bit crazy... I didn't stop to go back and see who had posted a story about the evolution of the foot and toes and how it shows that we were runners in ancient times, but here is a modern example supporting that claim. An African man tracks, then runs down an antelope. Hear that again... a man runs down an antelope! 8 hours of running and the Antelope collapses at which point the man spears him. And I feel proud when I run for an hour!