Set up a cable station pulley at the highest height with a handle attached. Grip the handle firmly as you half kneel directly in front of the cable. Ensure you are far enough away from the cable to keep tension on it throughout the movement. Keeping your back straight and core braced your arm should be extended overhead. This is your start position. Keeping your traps relaxed and focusing the tension in your lats, pull your elbow down towards your torso. Exhale as you do so. At the bottom of the movement pause for a count of one. Return to the start position with control, inhaling as you do so. Repeat all the required reps (or time) on one arm before changing to the other.