Sit on seat above twin cable pulleys. Grasp stirrups on each side. Sit upright with arms nearly straight down to each side. Internally rotate shoulders so elbows point out to sides.
With elbows straight or slightly bent, raise upper arm away from low pulley to side, slightly to front (30° to 45°) until upper arm is shoulder height or slightly higher. Lower and repeat.
Maintain straight or nearly straight elbow position with elbows pointing outward throughout exercise.