Barefoot Running

Thousands of runners will be pounding the pavement during the Army Run this month.
And while most will be sporting traditional running shoes, some won't have much separating their feet from the asphalt.
It's part of the growing trend of "barefoot running."
Carly Warnock is trying to keep up with the stripped-down jogging style.
She is a masters student in medical anthropology at the University of Ottawa. 
And she's starting a study of the culture of barefoot running.