Some of Japan's top athletes are using their talents to carve out new careers in the theater spotlight — and they have created one of the nation's most successful entertainment exports along the way

Forty sweating bodies lined across the stage move in unison, hands slapping legs with open palms. A surprisingly loud crack echoes through the quiet of the theater. Then another and another as the performers quickly build up a complex rhythm, varying the pitch of the sound hitting other parts of their bodies such as their biceps, forearms and chests.

To see and hear human bodies turned into living musical instruments has a sheer originality about it that is breathtaking.