If you’ve ever jolted awake with a painful cramp in your calf, you know that nighttime leg cramps (a.k.a. Charley horses) can disrupt your sleep and cause serious discomfort. Health experts say that ...

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 ...