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Scandinavian Sleep Method: Do Two Duvets Help Couples Sleep?

What the Scandinavian sleep method is, why a duvet each might help, what the research does and doesn't show, how it differs from a sleep divorce, and how to try it. For adults who share a bed.

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Scandinavian Sleep Method: Do Two Duvets Help Couples Sleep?

The Scandinavian sleep method means two people share a bed but each sleeps under their own duvet. It lets each of you pick your own warmth, and there's no single cover to fight over. We found no study that tested it as a way to sleep better, so think of it as a comfort choice that may suit you, not a sleep treatment.

This guide is for adults who share a bed, whether that's every night or some of the time. It covers how the method works, why it might help, what the research does and doesn't show, how it differs from a sleep divorce, and how to try it. This is general information, not medical advice.

What the Scandinavian sleep method is

Instead of one large duvet across the bed, each person has a single duvet that covers roughly their half. You still share the mattress and the bottom sheet. Many people who sleep this way skip the top sheet altogether, according to the Sleep Foundation's guide.

The two duvets don't have to match. One person can have a thick, warm duvet and the other a light one, or a thin blanket. Some people add a decorative throw over both so the bed looks matched, the Sleep Foundation says.

The Sleep Foundation says the name comes from how popular the habit is in Sweden, Norway and Denmark, and that the idea went viral after a Swedish creator's TikTok post in October 2023. We found no survey that counts how many Scandinavians actually sleep this way, so take the label as a description of the bedding rather than a fact about a whole region.

Why two duvets might help

There are three plausible reasons. Each one rests on research about sleep in general, not on studies of duvets in pairs, so read them as our reasoning.

Each person sets their own warmth. In normal bedding, heat increases waking and cuts both deep (slow-wave) and REM sleep, according to a 2012 review by Okamoto-Mizuno and Mizuno. People also differ in when their body cools. In a lab study of 28 women and 28 men aged 18 to 30 whose sleep timing matched, women's body-temperature rhythm ran earlier relative to sleep (Cain 2010). That's one reason, and this part is our inference, why two people under one duvet may not want the same warmth at the same time. With a duvet each, the person who runs hot can use a lighter one or kick a leg out without uncovering anyone else. If heat is the main issue, our guide to the best temperature for sleep covers the room itself.

Less pulling, maybe less shared movement. With one duvet, every turn tugs the cover. Partners also tend to move at the same moments. In a 1994 UK study, wrist monitors tracked 46 pairs of bed partners over 8 nights. About a third of the movements happened in the same 30-second window for both partners. A second study in the same paper found that people moved more when sleeping with a partner than similar people sleeping alone, and moved less when their usual partner was away. Everyone in the paper was aged 23 to 67. The research didn't test duvets, and moving at the same time isn't proof that one person woke the other. Our guess is that a cover you don't share passes on fewer tugs, but nobody has measured it.

Different bedtimes get easier. If one of you goes to bed later, sliding under your own duvet disturbs less bedding than lifting a shared one. That's practical sense, not a research finding.

What two duvets don't change is the mattress. The Sleep Foundation's guide points out that movement can still travel across the mattress, and that two duvets won't stop snoring or sleep talking.

What the research says, and doesn't

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What the evidence says (checked 13 November 2026). Verdict: not tested yet.

  • When we searched PubMed titles and abstracts on 13 November 2026, we found no study that compared one shared duvet with two for couples' sleep. A search like that can miss studies that don't mention duvets in the abstract.
  • The closest study we found put 12 young couples to sleep in a lab under two duvets, side by side. Compared with sleeping alone, they had a little more REM sleep and more leg movements, and no change in total sleep (Drews 2020).
  • The heat research is about room and bedding temperature in general. It doesn't test duvets in pairs.
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That middle study is worth a closer look, because it's the only one we found where couples slept under a duvet each. Its abstract doesn't mention duvets, which is why a search of abstracts alone can miss work like it. In 2020, Drews and colleagues at Kiel University in Germany recorded the sleep of 24 healthy adults, 12 heterosexual couples with an average age of 23.5, in a sleep lab. On one weekend each couple slept apart in separate rooms. On the other they slept in two single beds side by side, with two sheets and two duvets.

Sleeping together came with about 10% more REM sleep (23% of sleep time against 21%), REM that was broken up less often, and more leg movements. Total sleep time, sleep efficiency and the time it took to fall asleep didn't change. Partners' sleep stages also lined up more when they shared the bed. The authors list the two duvets as one way the lab differed from home, and suggest the effects could be stronger in a normal bedroom.

So the study compared a duvet each with sleeping alone. It didn't compare a duvet each with one shared duvet, which is the question most people are asking. It was also small, in a lab, and only in young, healthy couples.

Sleep divorce: what it is and what it isn't

A sleep divorce is a bigger step. The Sleep Foundation defines it as partners sleeping in separate rooms or beds to get a good night's sleep. Two duvets keep you in the same bed. A sleep divorce doesn't.

How common is it? In a January 2023 online survey of 1,250 US adults who regularly shared a bed, run by the Sleep Foundation's parent company, 1.4% said they had started and kept up a sleep divorce in the past year. That's a small share, and it's people answering a survey, not a trial, so it can't tell you whether sleeping apart would help you.

Who it suits, and when it won't help

This is our reading of the evidence above, not a tested list. Two duvets make the most sense if:

  • one of you runs hot and the other runs cold
  • one of you pulls or wraps the cover in the night
  • you go to bed or get up at different times
  • one of you moves a lot and the cover tugs with it

They won't help much with a room that's too warm for both of you, a noisy street, or a partner who snores.

Snoring is a separate problem. A snoring partner can break up your sleep. A small Mayo Clinic study recorded the sleep of 10 couples for one night while one partner was being checked for sleep apnoea. Halfway through, that partner was given CPAP, a mask that blows air to keep the airway open and stop the snoring. The other partner's brief arousals from sleep then fell from a median of 21 to 12 an hour, and the share of time in bed they spent asleep rose from 74% to 87%. All the patients were men, and it was one night, so it's a small result. Our guide to being a light sleeper covers noise, snoring and other reasons you wake easily.

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When to see a GP: loud snoring can be a sign of sleep apnoea. The NHS says to see a GP if you have its main symptoms, such as breathing that stops and starts in sleep, gasping, snorting or choking noises, or always feeling very tired during the day. If someone else has noticed the symptoms, it can help to bring them with you. Sleep apnoea can be serious if it's not diagnosed and treated.

This is general information, not medical advice. NSDR is not a treatment for any condition.

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How to try it

  1. Pick two single duvets. Each should cover about half the bed. In the US that usually means twin or twin XL. They can overlap a little in the middle.
  2. Choose each one for its sleeper. A heavier duvet for the person who feels the cold, a lighter one or a thin blanket for the person who runs warm.
  3. Decide on the top sheet. Many people drop it. If you run warm, try without.
  4. Check the room first. If you're both hot, two duvets won't fix that. Start with the room temperature and see our temperature guide.
  5. Give it two weeks. That's our suggestion, not a tested period. Note how often you wake, whether you're still fighting over covers, and how you feel in the morning. Then decide.

If noise is the bigger problem, some people use a steady sound to cover a snoring partner or a busy street. Our guide to sleep sounds compares the options, and our list of ways to sleep better covers the wider basics.

FAQ

What is the Scandinavian sleep method?

Two people share a bed, but each sleeps under their own single duvet instead of one large shared one. Many people who do it skip the top sheet too.

Does the Scandinavian sleep method work?

We found no study that tested it against one shared duvet, so there's no evidence yet that it improves sleep. It does let each person choose their own warmth and stops one person pulling the cover off the other, which are plausible reasons it feels better for some couples.

Is it better to sleep with separate duvets?

It depends on the two of you. If you differ on warmth, bedtimes or how much you move, separate duvets are a cheap thing to try. If you both sleep well under one, nothing in this research says you need to change.

What is a sleep divorce?

Sleeping in separate beds or separate rooms so each person sleeps better. The Scandinavian method is a smaller change, since you stay in the same bed.

Do I need a bigger bed?

Not necessarily. The Sleep Foundation says two duvets may not fit easily on a smaller bed. Its suggestions are to overlap them a little in the middle, buy smaller duvets, or get a larger bed, especially if you wake easily to your partner's movements. We found no research on bed size and couples' sleep.

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