Why Do Olympians Wear That Colorful Tape?

You may have first noticed the markings on the synchronized swimmers' backs. Or cascading down a beach volleyball player's chiseled abs. Birthmarks? Accessories? A bizarre form of intimidation? No, no, and no. The answer is Kinesio tape. And, yes, it's all the rage in the sports world. So, what is this tricked-out injury treatment?