Gym = place where suckers go and pay money to exercise. All you need is your own body weight, dip bars, pull up bars, and a park bench. The biggest guy I've ever met told me "the only reason you would visit a gym is to use the rowing machine" We didn't have a gym in prison, but you lock a man in a small room for 22 hours a day and he's going to start doing squats and pushups out of boredom.