FROM Discovery News by Jennifer Viegas
"When you walk barefoot, your middle toes curl into the ground to give you traction as you push off," explained co-author Erik Trinkaus, who worked on the study with Hong Shang.
"If you regularly wear Nikes, moccasins or any other type of shoe, you actually wind up pushing off with your big toe, with less force going through the middle toes," added Trinkaus, a Washington University anthropologist who is one of the world's leading experts on early human evolution.
