Who Is Most at
Risk of Night Cramps?
Night cramps—especially sudden, painful cramps in the calf or foot—are common and often harmless. They can happen to anyone, but certain people are more likely to experience them.
People at higher risk
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Older adults — Nighttime leg cramps become more common with age, partly because muscles and tendons change over time.
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Pregnant people — Leg cramps are particularly common during pregnancy, especially later in pregnancy.
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People who exercise heavily — Intense or unfamiliar exercise can fatigue muscles and may contribute to cramping.
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People who stand or sit for long periods — Long periods in the same position can be associated with nighttime leg cramps.
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People who are dehydrated — Losing substantial fluid through sweating, vomiting, or diarrhea can contribute to muscle cramps.
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People taking certain medications — Some medicines, including certain diuretics and other drugs, can be associated with cramps. Don’t stop a prescribed medication without medical advice.
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People with nerve or circulation problems — Conditions affecting nerves or blood flow to the legs can sometimes cause cramping.
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People with kidney, liver, or thyroid disorders — These conditions can sometimes be associated with muscle cramps, although cramps alone don’t mean that one of these diseases is present.
What can you do when a cramp strikes?
Try gently stretching and massaging the affected muscle. For a calf cramp, straightening the leg and gently pulling the toes toward you can help stretch the calf. Walking carefully for a short time may also help.
For prevention, regular calf and hamstring stretching, adequate hydration, and avoiding sudden increases in exercise may be useful.
When should you talk to a doctor?
Get medical advice if cramps are frequent, severe, worsening, disturbing your sleep regularly, or accompanied by swelling, numbness, weakness, or skin changes.
If a leg suddenly becomes swollen, red, warm, and painful—particularly on one side—seek prompt medical evaluation because that pattern can have causes other than an ordinary muscle cramp.
Also, don’t automatically assume nighttime cramps mean you need magnesium or another supplement. Mineral supplements aren’t appropriate for everyone, and the cause of recurring cramps should be considered first.
