We've all been there before. Running along the basketball court or swimming across the pool, when, all of a sudden, we experience a sharp pain in our foot or leg. Muscle cramps are common, affect ...

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Though many people experience muscle twitching, it's often incorrectly identified as a muscle spasm. While both are involuntary contractions of a muscle, muscle spasms and muscle twitching aren't ...

Medically reviewed by Amy Kwan, PT Muscle fatigue is a decreased ability to create force with your muscles.Electrolyte imbalance and overuse are some of the most common causes of muscle fatigue.Rest ...

Clonus reflex is a set of rhythmic, involuntary muscle movements. It is a neurological condition that affects the nerve cells that control muscle movements. Damage to the nerves, as in clonus, causes ...

Occasional leg cramps are considered common and usually harmless, especially after physical exertion, dehydration, or ...

In a serendipitous discovery, UC San Diego researchers using cryo-EM technology captured the first visualizations of the 3-D structure of the muscle acetylcholine receptor in fetal and adult muscles.

You may get muscle cramps from dehydration, mineral loss, or overuse during exercise. Warm up and stretch your muscles before ...