Shoulder stability is essential to packing a powerful golf swing. Without stability, flexibility and strength in your shoulders your swing is not going to be as efficient or effective as it could be. In fact, you can wind up with shoulder injuries that not only hurt your swing, but literally hurt your shoulders.

There are a number of things that can contribute to rotator cuff (the muscles in your shoulders that allow for circular motion) problems, but Brian Schiff, a licensed physical therapist specializing in sports medicine, sees three main contributors: poor posture, flexibility issues, and a decreased level of muscular strength and endurance.