You're just drifting off -- or maybe you're already asleep -- when a sudden, sharp cramp in your calf jolts you awake. Nighttime leg cramps are common and can make it hard to fall or stay asleep. But ...

Waking up in the middle of the night with a sudden, sharp pain in your leg can be both alarming and uncomfortable. These muscle contractions, known as night-time or nocturnal leg cramps, usually ...