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. They ...

Your rotator cuff includes several muscles that support range of motion in your arm and shoulder while holding the socket in place. The rotator cuff is a group of four muscles that hold your upper arm ...

Your rhomboid muscles connect your shoulder blade (scapula) to your spine. If your rhomboid muscles hurt, you’ll feel it in your back and shoulders. “The rhomboids can become painful because of ...

Regular resistance training that engages your shoulder muscles—primarily your deltoids, the rounded muscles that cover your shoulder joint—can help you remain functionally fit and avoid painful ...

Upper back pain between the shoulder blades may result from poor posture or muscle strain. However, it can also stem from more serious problems with the spine, such as scoliosis or osteoarthritis.

Neck and shoulder pain can be caused by poor posture, muscle strains, or degenerative conditions, which break down the structure and function of certain organs and tissues. Targeted exercises can help ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Your shoulders are an ...

Sleep helps the body repair itself. However, some people may notice that their shoulder hurts after sleeping, or that sleep makes their preexisting shoulder pain worse. Shoulder pain from sleeping has ...

If you’re looking to work the small but mighty muscles in the front of your upper body, the dumbbell shoulder press is a great way to do so. The simple yet effective exercise can help you build ...