Our ancestors were good steady state runners and hunted some animals by simply running them into the ground, but there's probably a very small % of humans who are similar to those ancestors in stature, etc and are found in Kenya and such. There's a reason the best marathon runners tend to come from a few specific areas. But the res of us, well, we have been altered quite a bit since leaving Africa and of course don't have to run game animals down any more. See:
"The researchers identified a range of physical traits that suggest human ancestors evolved as distance runners. The adaptations helped them chase down prey and compete more effectively with the speedier carnivores on the open plains of Africa, the study says.
The researchers say adaptations for running stretch back more than two million years, allowing humans to evolve from our apelike ancestors Australopithecus.
"We think running is one of the most transforming events in human history," Bramble added. "We are arguing the emergence of humans is tied to the evolution of running."
Humans Were Born to Run, Fossil Study Suggests
