Add Yahoo as a preferred source to see more of our stories on Google. The deltoids are the muscles that cover the front, back and side of the shoulder joint — and they are essential for everyday ...

Overhead presses, lateral raises, and other movements target the deltoid muscle to improve shoulder stability, increase strength, and build muscle mass.

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 ...