Who Is Most at Risk of Night Cramps?

Night cramps (often called nocturnal leg cramps) are sudden, painful muscle contractions that usually affect the calves, feet, or thighs during sleep. They can happen to anyone, but some people are more likely to experience them.

1. Older Adults

Night cramps become more common with age, possibly due to:

Natural changes in muscles and nerves
Reduced flexibility
Less physical activity
Changes in circulation

2. People Who Are Dehydrated

Not drinking enough fluids can contribute to muscle cramps, especially after:

Hot weather
Heavy sweating
Exercise
Illness causing fluid loss

3. People Who Stand or Sit for Long Periods

Long periods of inactivity may increase the risk, including:

Sitting at a desk all day
Long journeys
Standing for many hours at work

Regular movement and stretching can help.

4. Athletes and People Who Exercise Intensely

Strenuous activity can trigger cramps due to:

Muscle fatigue
Overuse
Inadequate recovery
Fluid loss through sweating

5. Pregnant People

Leg cramps are common during pregnancy, especially later on. Possible factors include:

Increased pressure on blood vessels and nerves
Changes in circulation
Increased strain on leg muscles

6. People Taking Certain Medications

Some medicines may increase the likelihood of cramps, including:

Some diuretics (“water tablets”)
Certain cholesterol-lowering medicines
Some asthma or blood pressure medicines

If you suspect a medication is causing cramps, discuss it with your healthcare professional before making changes.

7. People With Certain Health Conditions

Night cramps may be more common in people with conditions such as:

Peripheral artery disease (reduced blood flow to the legs)
Diabetes-related nerve problems
Kidney disease
Thyroid disorders
Nerve disorders

8. People With Low Levels of Certain Minerals

Mineral imbalances can sometimes contribute to muscle cramps, including changes in:

Magnesium
Potassium
Calcium

However, taking supplements without knowing you are deficient is not always helpful and may be unsafe for some people.

What May Help Prevent Night Cramps

✅ Stretch calf and leg muscles before bed
✅ Stay adequately hydrated
✅ Keep active during the day
✅ Wear supportive footwear
✅ Avoid sudden increases in exercise intensity
✅ Gently massage or stretch the muscle during a cramp