to get the best results out of your workouts, aren't you supposed to use your full range of motion. for example, when you bench, you bring the weight 2 inches from your chest and bring it up right before you hit lockout. there is this big guy that goes to my gym and whenever he does any exercise, his range of motion is only about 2-3 inches. for instance, when he does incline bench presses, he piles on about 5 plates on each side, but when he does his rep. . . .he only brings the bar down about 3 inches. how effective does this work compared to bringing it down for a full rep. I would ask him, but he humongous and I don't want to question his technique.