Weightlifting consists of a sporting competition that requires the participants to lift metal bars with weights attached to the end. Powerlifting competition is based on the three lifts, the bench press, back squat, and deadlift. Olympic weightlifting competition is based on two lifts, the snatch and the clean-and-jerk. Bodybuilding consists of lifting weights to attain muscular tone and size. Bodybuilding competition is based on muscular size and symmetry.