Arnold Schwarzenegger goes undercover to work at a gym

"Stop being a baby. This is not baby gym."

Strongman, action hero and former governer of California Arnold Schwarzenegger dons a (really stupid looking) fake moustache and wig as he goes undercover as a trainer at a local gym

It's all part of Arnie's increasingly madcap efforts to promote awarness of, and raise money for, after-school programs for US kids.