(via YouTube/Arnold Schwarzenegger)

In order to promote health and fitness, Arnold Schwarzenegger recently went undercover as an employee at a Gold's Gym.

While his costume was lacking (who wouldn't recognize Arnold at a gym with his picture on the wall?), the skit produced some classic lines.

Always remember, "This is Gold's Gym, not a baby gym," and don't forget to do your water reps!

Thanks to Tyler Stewart of Muscle & Fitness for the find.