This stretch feels as relaxing as it looks and is just the thing to open tight shoulders and your upper back. After shampooing your hair, do this stretch under the shower stream to rinse the suds out.
Stand with feet together. Open your arms out to the sides behind you and place your palms on the wall and door of your shower. Press your palms away from you and lean forward slightly to intensify the stretch, holding for 30 seconds or more.