Quick and easy Shoulder Stability exercise. #shoulderprehab #shoulderstability You probably heard a thousand times already that External Rotation creates more stability for the shoulders- so try this: Place a Thera Band around your wrists and pull the hands away from one another. It's important to squeeze the elbows into the ribs to isolate the external rotators. Make sure you can feel it working deep in your shoulders as oppose to your trapz or arms. Do several reps before a workout!