I am trying to get into shape for summer, and one area that has always been challenging has been my upper arms. Recently, though, I began a workout routine, but a friend warned me about the risk of ...

What Is the Latissimus Dorsi Muscle? The latissimus dorsi is a large muscle covering your back. You may know it as your lats muscles. They're connected to many parts of your body, originating from ...

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 ...

Question: I am trying to get into shape for summer, and one area that has always been challenging has been my upper arms. Recently, I began a workout routine, but a friend warned me about the risk of ...

Pain in the triceps most often occurs due to triceps tendonitis. Other possible causes include triceps tears and snapping triceps syndrome. Treatments can depend on the cause. The triceps muscle is ...

Rhomboid muscle pain occurs between the shoulder blades and spine. It may feel like tenderness around the shoulder blade. Risk factors for rhomboid muscle pain include injury and general overuse. The ...

DEAR MAYO CLINIC: I am trying to get into shape for summer, and one area that has always been challenging has been my upper arms. Recently, though, I began a workout routine, but a friend warned me ...

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Pain in your left arm can be due to a number of causes, not just a heart attack. Other causes like a muscle sprain, pinched nerve, or angina could be at fault. Check your other symptoms to determine ...

Feeling sore after a workout is known as delayed onset muscle soreness (DOMS). Sore muscles after exercise are a result of muscle breakdown during a workout, particularly on the eccentric portion or ...

Medically reviewed by Amy Kwan, PT Muscle strain and poor posture are common causes of latissimus dorsi pain.  Treatment for ...