Grasp the handle of a floor pulley with your left hand. Stand with your feet about shoulder wide, close to the pulley, with your back toward it.
Bend your left arm slightly and keep it fixed at the elbow throughout the exercise. Allow the cable to pull your arm down.
Keeping your torso still, raise your left arm forward to shoulder level or slightly higher. Your palm should be facing the floor.
Hold this position for a moment and slowly lower your arm back.