Perform with your back flat against the wall, feet 6 inches off the wall. The objective is to achieve full lockout of the arms overhead, followed by tucking your elbows into your "back pockets" at the bottom of the movement. 6-8 reps. This exercise is just a diagnostic as it is therapeutic in that if you cannot perform the movement with your back flat against the wall, while your wrists stay in contact with the wall. It indicates decreased ROM in the shoulder. But addressing this movement can also correct the dysfunction.