Penn & Teller: Bull! - Season 2: Episode 12

Exercise Schmexerise. Here's the shocker: the power of genetics determines your body type. Throw away all those fitness machines, gym memberships and exercise manuals, the size and shape of your body was decided the moment you were conceived. A look at the huge amount of bullshit behind the exercise industry. Gym memberships, fat-burning, muscle-building supplements, exercise tapes and equipment - we're fair game... and so are they!