The 100-meter hurdles and the Internet just got a little sexier thanks to a racy pre-race warmup routine by Australia's Michelle Jenneke.If her goal was to get the blood pumping, it apparently worked (and for Jenneke, too), as the 19-year-old dominated the IAAF World Junior Championship in Barcelona last weekend. Along the way, she became a viral video sensation (videos such as the one you no doubt just played -- be honest -- are getting clicked as fast as, well, as fast as Michelle Jenneke runs the 100-meter hurdles). What seems clear is that this is one athlete who embraces the joy of running, and given some of the high-strung language accompanying track athletes these days, a little fun is a welcome thing.

read more: Barcelona 2012: Michelle Jenneke: Australian hurdler, dancing sensation