For example, in your arm, your biceps and triceps are antagonistic ... such as the stomach lining. Skeletal muscle is joined to bones. Its cells contract to make bones move and joints bend.

Acute injury, overuse (wear and tear), and underlying conditions affecting arm bones, muscles, joints, tendons, or other connective tissues can cause pain and discomfort anywhere from your ...

Seated arm circles are a simple exercise to ... the muscles around the shoulders and upper arms. Strong muscles can help support the bones and reduce the risk of fractures. Stand or sit upright ...