Running is often touted as the perfect exercise, partly because it's so simple: Lace up your shoes and go. Now, a small but vocal contingent of runners says it can be even simpler and perhaps healthier -- just lose the shoes for an even better workout.
Barefoot running divisions are cropping up at organized runs across the U.S., and Christopher McDougall's barefoot running book, Born to Run, landed on the New York Times best seller list.
Curious? Here's the lowdown on barefoot running and what you should keep in mind if you try it.