Night cramps (especially nocturnal leg cramps) can happen to anyone, but some people are more likely to experience them. Those at higher risk include:
- Older adults — Risk increases with age, partly because of changes in muscles, nerves, and circulation.
- People who are physically inactive — Weak or shortened muscles can be more prone to cramping.
- Athletes or people who overuse muscles — Intense exercise, especially without proper stretching or recovery, may trigger cramps.
- People who are dehydrated — Low fluid intake or heavy sweating can contribute to muscle spasms.
- Pregnant people — Leg cramps are common, especially in later pregnancy.
- People with certain medical conditions, including:
- Peripheral artery disease (reduced blood flow to the legs)
- Diabetes-related nerve problems
- Kidney disease
- Thyroid disorders
- Nerve compression or neuropathy
- People taking certain medications, such as some diuretics (“water pills”), cholesterol-lowering drugs (statins), and some asthma or blood pressure medicines, may have an increased risk.
Common triggers include:
- Sleeping with the foot pointed downward
- Long periods of sitting or standing
- Muscle fatigue
- Low levels of certain minerals (though this is less common than many people assume)
When to seek medical advice: Talk to a healthcare professional if cramps are frequent, severe, worsening, cause weakness or numbness, involve swelling/redness, or regularly disrupt sleep.
Simple measures that may help include gentle calf stretching before bed, staying active, maintaining hydration, and adjusting sleep position if certain positions trigger cramps.
