@anatomy.of.motion: Muscles connecting our arm to the body can be divided into 3 groups: First consists of large functional muscles and includes the pectoralis major, deltoid, and lats. Second comprises movement assistants and general stabilizers like pectoralis minor, biceps, coracobrachialis, part of the triceps, and teres major. And the third consists of muscles dedicated to stabilize the head of the humerus: the subscapularis, supraspinatus, infraspinatus, and teres minor, collectively known as the rotator cuff. Find a way to balance training among these groups and your shoulders will thank you. #anatomy #shoulders