You get into bed, the lights go off, and within minutes your legs start up. Not pain exactly, more a crawling, fizzing, unbearable need to move them. You shift position. It settles for a moment. Then it comes back, and the only thing that helps is getting up and walking about, which is the last thing you want to be doing at half past eleven.
Restless legs at night is a genuine neurological condition, not fidgeting and not something you are imagining. It has a name - restless legs syndrome, sometimes called Willis-Ekbom disease - and it affects a surprising number of people, particularly women and particularly during pregnancy. The good news is that there are real, well-understood causes behind it, and several of them are fixable.
What restless legs at night actually feels like
The defining feature is an urge to move, not a sensation. People describe it as crawling, tugging, fizzing, buzzing or an itch inside the bone. The sensations vary enormously, but the compulsion to move is always there, and moving always brings relief - at least briefly.
Four things doctors look for
An urge to move the legs, usually with an uncomfortable sensation. Symptoms that start or worsen during rest. Relief that comes with movement. And a clear evening or night-time pattern. If all four fit, restless legs syndrome is the likely explanation.
Why it is worse at night
Symptoms follow your body clock. Dopamine activity naturally dips in the evening, and that dip lines up almost exactly with when the legs start playing up. It is the same circadian machinery that governs when you get sleepy, which is why people with restless legs so often also find themselves awake at 3am and unable to settle again.
What causes restless legs at night
Low iron stores in the brain
This is the single most important cause to rule out. Iron is needed to make dopamine, and brain iron levels can be low even when a standard full blood count looks normal. The test that matters is ferritin, which measures stored iron. Many specialists consider treatment worthwhile when ferritin sits below roughly 75 micrograms per litre, which is well inside the range most labs flag as normal. Ask your GP for a ferritin test specifically.
Pregnancy
Restless legs is common in the third trimester and usually settles within weeks of the birth. Iron demand is part of the reason. If you are expecting, our guide to sleeping well through every trimester covers the wider picture.
Medicines and stimulants
Several common medicines can trigger or worsen symptoms, including some antidepressants, sedating antihistamines and anti-sickness drugs. Caffeine, alcohol and nicotine all tend to make things worse too - the same trio we flagged in how caffeine and alcohol quietly ruin your sleep. Do not stop a prescribed medicine yourself, but do mention the timing to your GP.
Other health conditions
Kidney disease, diabetes, an underactive thyroid and peripheral neuropathy are all associated with restless legs. There is also a strong family pattern - if a parent had it, your odds are considerably higher.
What actually helps
Get your ferritin checked first
If low iron is behind it, no amount of stretching will fix the problem, and correcting the iron often transforms it. This is the one step worth doing before anything else. Do not self-prescribe iron supplements, though - too much iron carries its own risks, so let a blood test guide it.
Move regularly, but not late and not to exhaustion
Moderate daily activity reliably reduces symptoms. Hard training late in the evening often makes them worse. A daily walk is close to ideal, and our piece on walking and sleep explains why it works so well. If you want structure, what actually works with exercise and sleep is a good companion read.
Use physical counter-pressure
Massage, stretching the calves, a warm bath, a cool flannel, or firm pressure on the legs all interrupt the sensation by giving the nervous system something else to process. Lying on an acupressure mat for better sleep works on the same principle - broad, steady stimulation that pulls attention away from the crawling feeling and helps the body drop into a calmer state. Our explainer on acupressure for better sleep covers what it does and does not do, and the wider deeper sleep collection gathers the rest of the relaxation tools in one place.
Stretch before bed, gently
Calf and hamstring stretches, a few minutes of legs-up-the-wall, or a short restorative sequence all help. Our notes on yoga and sleep have specific positions worth trying.
Keep the timing steady
Because symptoms are tied to your body clock, an erratic schedule makes them less predictable and harder to manage. Consistent bed and wake times give you a fighting chance, and a settled bedtime routine makes the whole evening easier.
Frequently asked questions
Is restless legs at night dangerous?
Not in itself. The real cost is chronic sleep loss, which affects mood, concentration and general health over time. That is reason enough to treat it properly rather than putting up with it.
Will iron tablets fix it?
Only if your iron stores are genuinely low, and only under medical guidance. Get a ferritin blood test first. Taking iron you do not need is not harmless.
Does stretching before bed really help?
For mild cases, often yes. Stretching, massage and warmth can take the edge off enough to let you fall asleep. For moderate or severe symptoms it is a useful addition rather than a solution on its own.
Is restless legs the same as leg cramps?
No. Cramps are a sudden painful muscle contraction that stops you moving. Restless legs is an urge to move that is relieved by moving. Different problem, different treatment.
When should I see a GP?
If symptoms happen most nights, cost you sleep, or are getting worse. Ask specifically about a ferritin test and review any medicines you take in the evening. Effective prescription options exist if the simpler measures are not enough.
The bottom line
Restless legs at night is real, it is common, and it responds to treatment far better than most people assume. Start with the ferritin test, because low iron is both the most likely fixable cause and the most frequently missed one. Then build the supporting habits around it: daily movement, gentle stretching, steady timings, less caffeine and alcohol in the evening, and something physical to settle the legs when they start up. Most people find the difference comes from stacking several small things rather than finding one perfect fix.
Try DreamMat Acupressure Mat - ten minutes of steady pressure to help restless legs and a busy body settle before bed.
Kinder nights, brighter mornings. SleepyDeepy.
