The shoulder muscle group is made up of three distinct heads: the anterior (front) deltoid, the lateral deltoid, and the posterior deltoid. Together, they create the iconic “rock shoulder” look ...

The posterior deltoids help with many pulling movements and stabilize the shoulder joints. Rowing, pull-ups, and other exercises can help to improve posterior deltoid strength. You need strong ...

The deltoid is a large muscle responsible for lifting the arm and giving the shoulder its range of motion. Pain in this area may be due to issues like overuse or injury. The deltoid is located in the ...