Start: Lie on a bench with your head, torso, and hips pressed against it and your feet spread wide and flat on the floor. Grab the barbell with a full overhand grip. Place your hands slightly wider than shoulder-width apart., remove the bar from the uprights, and hold it with straight arms over your collarbone. Pull your shoulder blades together in back.
Finish: Lower the bar, slowly and I control, to just above your nipples. Then press it u and just slightly back so it finishes above your collarbone again. Stop just short of locking your elbow, and keep your shoulder blades pulled back.
Lower the bar toward your throat rather than your nipples, forcing your elbows out to the sides. This changes the angle of pull on your pecs and increased demand on your shoulders.