The band internal rotation increases stability in the shoulder, emphasizing the rotator cuff. This exercise may serve as a warm-up or prehabilitation exercise.
Attach a resistance band to a fixed object, then stand to one side, facing the object. Grab the band with the hand that is closest to the band, keeping your elbow bent to 90 degrees and close to your body, keeping the resistance band taunt.
Move your hand inward across your body toward the opposite elbow, keeping your working elbow stationary. When you can go no further, pause, then return to the starting position.
Do not add extra, unnecessary tension. The goal is to improve your range of motion.