Real Shoulder Range:

Stand with your bum, shoulder blades and back of your head against a wall. Keep the back of your hands against the wall while you make a snow angel against the wall until your hands are overhead. Did your back lift away from the wall? Your thoracic spine (the part of the back that has ribs) should still be against the wall. We tend to jut our ribs forward in order to get false extension from our backs and more range out of the shoulders.