You're fast asleep when a sudden, sharp pain jolts you awake. Your calf muscle tightens into a hard knot, making it almost ...

A doctor answers common questions about nighttime leg cramps, including what causes them, how to stop them, and when to seek medical care.

Simone Biles receives treatment during Women's Qualification during Day 2 of the 2024 Summer Olympics at Bercy Arena in Paris, France, on July 28. (Photo by Erick W. Rasco/Sports Illustrated via Getty ...

Night leg cramps, or nocturnal leg cramps, are sudden, involuntary muscle contractions that usually occur in the calves, feet, or thighs during rest or sleep. These painful spasms can last from a few ...