Muscle man Jack LaLanne — "the godfather of fitness" — was a successful bodybuilder back in the day. The following vid was intended to be an instructional home workout aid, but all I see is Jack flexing and showing off for the camera. At one point he even says, "Don't try this at home." Some workout! But the real kicker comes at the end when Jack makes an unwarranted sexist assumption. Since when is negative reinforcement the strategy for getting people into shape?