Stand with side to elbow height cable pulley. Grasp stirrup attachment with far arm. Position elbow against side and forearm across belly.
Pull cable attachment away from body as far as possible by externally rotating shoulder. Return and repeat. Turn around and continue with opposite arm.
Maintain elbow against side and fixed elbow position (90° angle) throughout exercise. Exercise may be performed seated on chair with pulley lowered to elbow height or seated on floor with low pulley.