Grasp two opposing low pulley stirrup attachments. Lie supine on bench, in middle and perpendicular to both pulleys. Slightly bend elbows and internally rotate shoulders so elbows are back.
Bring cable attachments together in hugging motion with elbows in fixed position and shoulders internally rotated so elbows are to sides. Return to starting position until slight stretch. Repeat.
Keep shoulders internally rotated so elbows point downward at bottom position and outward at top position. Keep elbows at fixed angle, only slightly bent.