The muscle twitch creates short, involuntary muscle contractions, which affect tiny muscle areas that lie beneath the skin.

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 ...

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 ...

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 ...

The mysteries of muscle cramps abound. Affecting everyone from everyday runners to the the San Francisco 49ers and international soccer stars, most experts still ask what causes cramps and how we can ...

Muscle cramps are the worst. Whether it's a side stitch during a run or a rogue "charley horse" that wakes you up at 3 in the morning, cramps can be incredibly painful and annoying. Cramps seem to ...

Dehydration may be one cause of muscle cramps, and some evidence suggests that electrolyte imbalances also contribute to them. Muscle cramps are painful, involuntary contractions of the muscles that ...

Twitching at night—it’s something few of us talk about, yet it’s also a phenomenon that impacts Americans when it comes to sleep quality. And even if you feel like you’re getting enough sleep, you ...