Grasp cable stirrup. Step back away from pulley, with foot on same side as exercising arm well behind forward foot, oriented out to side. Bend over with hand above knee for support. Keep back straight and knees slightly bent. Allow shoulder with stirrup to be pulled forward.
Pull cable attachment to side of torso, pulling shoulder back. Return until arm is extended and shoulder is stretched forward. Repeat. Continue with opposite arm.
Hamstrings and Gluteus Maximus stabilize near top of movement on forward leg.