With a D-handle in one hand, stand in a staggered shoulder-width stance with your back to a low cable pulley. Place your nonworking hand on your hip for balance. With your chest elevated, back flat and knees slightly bent, powerfully raise the cable up and out in front of you until your upper arm is about parallel with your working shoulder. Squeeze, then slowly lower your arm back to the start position (without letting the stack touch down) and repeat. Do all reps on one side before switching to the other.