Last updated: 10 November 2026
Short answer: Yes, for most people it is fine to sleep with socks on, and it may help you fall asleep faster. Warm feet help your body release heat, which is part of how it gets ready for sleep. Choose loose, breathable, clean socks, and skip them if you have poor circulation, swollen feet or numbness without speaking to your GP first.
Cold feet can make it hard to settle on a chilly UK night. Below, DELIM, a UK sleep wellness brand, explains what the research says about bed socks, which socks to choose, and who should be careful.
Does wearing socks to bed help you sleep?
It may. In a small study published in the Journal of Physiological Anthropology, people who wore bed socks in a cool room fell asleep 7.5 minutes faster on average and slept 32 minutes longer. They also woke up far less often, and their sleep efficiency (the share of time in bed spent asleep) was 7.6% higher. The researchers concluded that warming the feet with bed socks had positive effects on sleep quality.
There is an important catch. The study only tested six young men, so it cannot tell us how socks affect everyone. Cleveland Clinic sleep specialist Dr Aparna Bhat says wearing socks can be an effective part of a good sleep strategy, but also that it is a personal choice.
What the bed socks study found
| Measure | With bed socks (compared with no socks) |
|---|---|
| Time to fall asleep | 7.5 minutes shorter on average |
| Total sleep time | 32 minutes longer |
| Number of awakenings | 7.5 times fewer |
| Sleep efficiency | 7.6% higher |
| Foot temperature | 1.3°C warmer on average |
| Core body temperature | No significant change |
Source: Ko and Lee (2018), Journal of Physiological Anthropology. Six young men, one 7-hour sleep in each condition.
Why do warm feet help you fall asleep?
Warm feet help because your body cools down slightly as it gets ready for sleep. When your feet warm up, the blood vessels near the skin widen. Doctors call this distal vasodilation, which simply means the blood vessels in your hands and feet open up. Cleveland Clinic explains that this helps lower your core temperature.
The Sleep Foundation puts it like this: lower body temperatures usually come before sleepiness, and foot warming may help you fall asleep faster.
What kind of socks are best for sleeping?
The best socks for sleep are loose, soft and made from a breathable natural fibre. Cleveland Clinic suggests cotton, merino wool, bamboo or viscose, and says synthetic materials like polyester are less ideal. It also advises against sleeping in compression socks unless a doctor has recommended them for a medical reason.
| Sock type | Good for bed? | Why |
|---|---|---|
| Loose cotton | Yes | Natural fibre suggested by Cleveland Clinic |
| Merino wool | Yes | Natural fibre suggested by Cleveland Clinic |
| Bamboo or viscose | Yes | Natural fibres suggested by Cleveland Clinic |
| Polyester or other synthetics | Less ideal | Cleveland Clinic says synthetic materials are less ideal |
| Compression socks | Only if advised | Avoid at night unless a doctor recommends them |
| Tight everyday socks | No | The Sleep Foundation says socks should be loose enough to allow proper blood circulation |
Is it bad or unhygienic to sleep with socks on?
Sleeping in socks is not bad for most people, as long as they are clean and not too tight. Cleveland Clinic advises wearing a fresh pair every night to avoid bacterial growth. The Sleep Foundation adds that you should change your socks every night and wash your feet regularly.
Overheating is the other thing to watch. If you wake up with hot, sweaty feet, take the socks off or switch to a thinner pair. Socks are there to warm cold feet, not to make you hot.
A simple bed socks checklist
- Put on a fresh pair every night, not the ones you wore all day.
- Check the cuff. If it leaves a deep mark on your skin, it is too tight for bed.
- Pick a natural fibre such as cotton, merino wool or bamboo.
- Keep the room cool. The NHS Every Mind Matters guide says you may find it easier to sleep in a room that is quiet, dark and cool. Warm feet plus a cool room is the idea.
- Take them off if you overheat or wake up sweaty.
Who should and should not sleep in socks?
Bed socks are a personal choice, and most people can simply try them. The Sleep Foundation says sleeping with socks on may not be for you if you have circulatory issues or swelling of the feet. Here is a simple guide.
Socks may suit you if you:
- Often lie awake with cold feet
- Sleep in a cool bedroom or keep the heating off at night
- Get cold hands and feet easily. The NHS advice for Raynaud's, for example, includes wearing warm clothes during cold weather, especially on your hands and feet
Speak to your GP first if you:
- Have swollen feet or ankles
- Have a circulation problem, or have been told to wear compression socks
- Have diabetes or numbness in your feet
- Have feet that feel cold all the time along with leg pain or sores. The NHS says cold feet, leg pain when walking and sores that do not heal can be signs of peripheral arterial disease, and you should see a GP
Are socks better than a hot water bottle or electric blanket?
Socks are the simplest option because they need no heat source and stay on your feet all night. A hot water bottle or electric blanket is another way to warm up, but each comes with its own safety rules. If you use an electric blanket, read our guide on whether you can sleep with an electric blanket on before leaving it on overnight.
Many people use socks together with a warm, not hot, bedroom. Our guide on whether you should sleep with the heating on covers how warm your room should be on cold UK nights.
Can socks help if you cannot sleep at all?
Socks may help you drift off a little faster, but they will not fix ongoing sleep problems. The NHS lists a room that is too hot or cold as one of the most common causes of insomnia, so getting comfortable is a good first step.
The NHS also says to see a GP if changing your sleeping habits has not helped, if you have had trouble sleeping for months, or if poor sleep makes it hard to cope day to day. A stuffy winter nose can also keep you up, and our guide on how to sleep with a blocked nose has simple steps that can help.
Frequently asked questions
Should you sleep with socks on?
For most people, yes, it is fine and may help. A small study found people wearing bed socks fell asleep 7.5 minutes faster and slept 32 minutes longer. Choose loose, clean, breathable socks.
Is it bad to sleep with socks on every night?
No, not for most people, as long as you wear a fresh pair each night and they are not tight. Speak to your GP first if you have circulation problems, swollen feet, diabetes or numbness in your feet.
Why do warm feet help you sleep?
Warm feet make the blood vessels near the skin widen, which helps your body release heat. Cleveland Clinic explains this helps lower your core temperature, which is part of getting ready for sleep.
What socks are best for sleeping?
Cleveland Clinic suggests loose socks made from cotton, merino wool, bamboo or viscose. It says synthetic materials like polyester are less ideal, and compression socks should be avoided at night unless a doctor recommends them.
Can sleeping in socks make you too hot?
Yes, it can. If you wake with hot or sweaty feet, take the socks off or switch to a thinner pair. The NHS says a cool bedroom often makes it easier to sleep.
The bottom line
If cold feet keep you awake, a pair of loose, clean, breathable socks is a simple and cheap thing to try. The research is small but promising, and it fits with how your body cools down for sleep. Keep the room cool, wear a fresh pair each night, and speak to your GP if you have circulation problems, swollen feet or diabetes. For more cosy winter tips, see our guide on how often you should wash your bed sheets.
This post is for information only and is not medical advice. If you have a circulation problem, diabetes, swollen feet, ongoing sleep problems or any other health condition, please speak to your GP.
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