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Leg Cramps At Night: Causes & How To Stop Them

A leg on a bed at night — calf cramps often wake people from sleep
Quick Answer

To stop a leg cramp at night, straighten the knee and pull your toes towards your face until the calf stretches, and hold for 30 seconds. The cramp usually stops in under a minute. Causes include dehydration, long periods standing, short calf muscles, low magnesium or potassium, side effects of certain medicines, and older age. Stretching the calf before bed reduces how often it happens.

Nocturnal leg cramps are sudden, painful contractions of the calf or foot muscles. They differ from numbness: numbness is a loss of sensation, while a cramp is a muscle that hardens and will not release.

How do you stop a cramp that is happening now?

  1. Straighten the knee. Sit or lie with the cramping leg extended straight.
  2. Pull the toes towards your face. Use your hand or a towel if you cannot reach. This stretches the calf directly.
  3. Hold 30 seconds, release, repeat. Most cramps settle in under a minute.
  4. Stand up and walk a little. Pressing the heel into the floor helps the muscle release fully.
  5. Apply warming massage oil and massage upwards. This eases the soreness left behind after the cramp — many people feel it into the next day.

What causes leg cramps at night?

  1. Dehydration. Sweating all day without drinking enough is the most common cause in a hot climate.
  2. Long periods standing or walking. A tired calf muscle cramps more easily during rest.
  3. Short calf muscles. Sleeping with the feet pointed downwards keeps the calf shortened all night.
  4. Low magnesium, potassium or calcium. These minerals control muscle contraction.
  5. Certain medicines. Some water tablets (diuretics) and cholesterol medicines list cramps as a side effect. Do not stop a medicine yourself — ask your doctor or pharmacist.
  6. Age. They become more frequent after 50 as muscle mass naturally declines.

Five bedtime steps that reduce how often they happen

  • Stretch each calf for 30 seconds before getting into bed — stand facing a wall, one foot back, heel pressed into the floor.
  • Drink a glass of water before bed if you sweated a lot during the day.
  • Loosen the blanket over your feet so the soles are not pushed downwards all night.
  • Apply warming massage oil to the calves and massage upwards for five minutes.
  • Avoid sleeping with your legs crossed or one on top of the other.

If what you feel is more numbness or tingling than a hardening muscle, see why feet go numb at night — the causes are different.

When should leg cramps be seen by a doctor?

Get them examined if they happen almost every night, come with swelling or colour changes in the leg, leave the muscle weak between episodes, started after you began a new medicine, or occur in one leg only along with pain when walking. Ordinary cramps do not leave muscle weakness behind.

Related questions

A few seconds to two minutes. Stretching the calf usually stops it in under a minute, though the soreness can linger into the next day.

Yes, it is one of the most common causes in a hot climate. Sweating all day without replacing water and mineral salts makes the muscle cramp more easily at night.

A cramp is a muscle hardening suddenly and painfully. Numbness is a loss of sensation without the muscle hardening. The causes differ, and so does the treatment.
AS

Admin Sari Tani

Content Manager

Manages official Minyak Tapil Cap Wanita content on behalf of Sari Tani Desa Sdn. Bhd.

Updated

Information on this site is for general information only and is not a substitute for professional medical advice. Consult a qualified healthcare practitioner for any health condition.

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