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 Jennifer Steinhoff, MD Key Takeaways Muscle twitching is often caused by stress or a lack of sleep and ...

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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 ...

Ever been sound asleep, only to be startled awake by a stabbing pain in your calf or hamstring? These sudden, intense muscle spasms are better known as charley horses. And they happen to up to 60% of ...

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 ...

That sudden, excruciating tightening in your calf or foot might be more than just an annoying interruption to your day or sleep. While occasional muscle cramps affect nearly everyone at some point, ...

Do you often yawn and stretch your body in the morning, only to have your calf muscle cramp up horribly? Or do your eyes twitch out of nowhere? When you fall behind on the adequate nutritional intake ...