The deltoids are the muscles that cover the front, back and side of the shoulder joint — and they are essential for everyday movements like raising your arms, lifting a child or carrying groceries.

Your deltoid muscles make up a main muscle group in your upper body. They’re connected with many other muscles and bones in your upper back, neck, and shoulder region and are extremely mobile. They ...

Lateral raises primarily target the middle deltoid, that key muscle that gives your shoulders their roundness and width. Well-developed middle deltoids not only enhance your aesthetics but also ...