STARTING POSITION:
Place the pulley on a position above your head. Select the appropriate resistance in the weight stack. Grab the handle of the pulley with your right hand, you should be next to it. Your elbow should be slightly bent and your hand should be slightly higher than your shoulder. Contract your pelvic floor and core.
MOVEMENT:
Using your pectoral and back muscles, move the handle towards the hip while you exhale. Return to the starting position with a smooth movement while you inhale. Repeat the movement for the specified amount of repetitions and then switch sides and repeat with the other arm.
TIPS: The exercise key is quality over quantity. The trick is to perform the exercise using proper form. While your are doing the exercise, move only the shoulder joint, make sure you don't move any other part of your body. During the opening, focus on slow and controlled movement.