In today’s video Show Up Fitness teaches you about one of the 17 muscles of the shoulder- Supraspinatus. ABOUT TODAY’S VIDEO: The Supraspinatus (one of the 4 rotator cuff muscles / SITS) originates on the supraspinous process, inserts into the greater tubercle, and acts on the humerus with abduction, scaption, and stabilization of the gleno-humeral…