When a general person walks into a gym and pays a personal trainer to improve their body, they often begin a workout with bench, squat, or deadlift. These three movements are the competition lifts used for Powerlifting, and they are beloved by coaches, bodybuilders, and trainers. This is not without good reason as they are compound movements. This means that they involve not just one muscle, but a group or chain of muscles to move the weight. This results in a greater stimulus to the nervous system which causes greater increases in size and strength.