An extremely mobile ball-and-socket joint, the shoulder can move in any direction. Although the joint moves freely, it’s not a very stable area of the body and several muscles, including the deltoids and rotator cuff muscles, provide extra support. Strengthening these upper body muscles and the bones underneath them not only prevents injury, but also leads to a more aesthetic look.

Overhead pressing and lateral raises can only do so much to build strong, functional shoulders. Here are 30 shoulder exercises to improve flexibility, add size, get stronger and complete your physique.