The shoulder muscles are responsible for maintaining the widest range of motion of any joint in your body. This flexibility is also what makes the shoulder prone to instability and injury. Muscles ...

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.

An overhead press works muscles in your upper body and stabilizes your shoulder muscles and movements. We talked to pros for tips, benefits, and more.

Not only does this position reduce that forward pull of your shoulders, but it also allows for unrestricted reach behind your body (and stretches the shoulder muscles), says Dr. Jeffcoat.

As a result, chin-ups better work the muscles on the front of your body, like your biceps and chest, while pull-ups are more effective at targeting your back and shoulder muscles.

Best for: The front of your shoulder (anterior delts) Stand with feet hip-width apart and knees slightly bent, holding 1 weight in each hand. Bend your elbows and raise weights over your shoulders.