External cable shoulder rotation

Instructions

Attach a handle to a pulley and adjust it to be at the level of your elbow.
Grasp the handle with your right hand and stand sideways with your left arm near the machine. Your right elbow is against your body. Your forearm is against your abdomen and forms a 90-degree angle with your upper arm. This is the starting position.
Keeping the elbow stationary, pull the pulley out as far as you comfortably can. Your hand will have described a semicircle.
Hold the position for one second then return to the starting position (do not let the weights touch the stack).

Muscles