Several bodybuilders perform strength workouts with dumbbells to prepare for the Mr. Olympia competitions.

A group of professional bodybuilders, including Arnold Schwarzenegger, perform various workouts to prepare for the Mr. Olympia competitions.

Lou Ferrigno works out his shoulders in preparation for the Mr. Olympia competitions. His facial expressions and inability to complete a set show that he's experiencing muscle fatigue.

Take a look inside a swimmer's strength and conditioning routine to protect their muscles and become one of the best swimmers.

Sebastian volunteers to be the test subject for their experiment in human invisibility and injects himself with an invisibilitiy serum. The layers of his body disappear one-by-one, revealing the inner workings of the human body.