OK, maybe I'm not in the best shape of my life, but does she really have to rub it in?

Bubbly and compact -- and with a set of abs that would make Charles Atlas proud -- Yuriko Ito, a 156-cm bundle of energy, just can't keep a smile off her face.

Don't let her outgoing, pleasant demeanor fool you, however. You may never have heard of her, but make no mistake -- Ito is truly a world-class athlete.