Muscles of the rotator cuff diagram showing front and back views, highlighting Supraspinatus, Infraspinatus, Teres minor, and Subscapularis muscles, relevant to shoulder health and fitness.

What in the Heck is the Rotator Cuff?

The Rotator Cuff (RC) (not the rotatory cup or tater cup) is a common name for the group of 4 muscles which provide strength and stability during motion of the shoulder. You may hear them also referred to as the “SITS” muscles (Supraspinatus, Infraspinatus, Teres...