Why Walk When You Can Run?

Though it comes as no surprise to this reporter, Springsteen had it right.  We were, indeed, born to run:

LONDON (Reuters) - Humans were born to run and evolved from ape-like creatures into the way they look today probably because of the need to cover long distances and compete for food, scientists said on Wednesday.

From tendons and ligaments in the legs and feet that act like springs and skull features that help prevent overheating, to well-defined buttocks that stabilize the body, the human anatomy is shaped for running.

"We do it because we are good at it. We enjoy it and we have all kinds of specializations that permit us to run well," said Daniel Lieberman, a professor of anthropology at Harvard University in Massachusetts.

Interestingly, the study also found that "big buttocks are also important," for runners as well as Sir Mix-a-Lot.