“They can because they think they can.”
Why are Kenyan runners faster than the rest of us?
There have been seventeen American men in history who have run a sub 2h10min marathon, yet in October 2011, there were thirty-two men in a small area within Kenya who did it. This tribe, the Kalenjin, are the running people, the fastest men on Earth… But why? Sure, they have bodies made for the sport (long thin limbs), and a social pressure to be the best (for the honor as well as the attractive runners salary), but Radiolab has suggested another compelling argument as to why these men can outrun the rest.