Having dislocated my shoulder multiple times in my 20s, I am quite familiar with the delicate group of muscles know as the rotator cuff since these are the muscles that help keep the joint intact. Made up of four muscles, the rotator cuff stabilises the shoulder, which is a really mobile and complex ball-and-socket joint. When working out, chances are low you think about these muscles since they don't really bulk up or add definition to your shoulders. Ahhh, but you should! They can be prone to overuse injuries, especially if you have tight pecs, which can compromise the shoulder joint, or do a lot of activities that involve overhead movement with force, like tennis, swimming, and weight lifting. Here are a few moves you can do to keep your rotator cuff supple and strong.