Your Partner Snores in Singapore? Treating It Gave Spouses 62 Extra Minutes of Sleep. Sleeping Apart Barely Helped

It is 2am in a Singapore HDB bedroom. The aircon hums, your partner is snoring again, and you are lying awake doing the maths on how many hours are left before the alarm. Moving to the sofa feels like the only fix.

The short answer: when a snorer's breathing problem was treated in a sleep lab, their spouse's sleep improved sharply. When women simply slept alone for a night, their measured sleep barely changed. And healthy couples who shared a bed got more REM sleep, not less.

Three findings from sleep labs in the US, France and Germany:

10 spouses of men with suspected sleep apnoea had sleep efficiency rise from 74% to 87% the moment their partner's snoring was treated, about 62 extra minutes of sleep by the researchers' own maths.
16 women who slept next to a snoring partner, then alone, showed no significant change in total sleep, deep sleep or REM.
12 couples who shared a bed had about 10% more REM sleep than when they slept apart.

Does a snoring partner really cost you sleep?

Yes, and it can be measured. In a 1999 Mayo Clinic study, researchers ran simultaneous overnight sleep tests on 10 married couples where the husband was being checked for obstructive sleep apnoea. Halfway through the night, the husbands were put on CPAP, a prescribed machine that keeps the airway open.

The wives' sleep changed within the same night. Their median arousal index, a count of brief wake-ups per hour, dropped from 21 to 12. Their sleep efficiency, the share of time in bed actually spent asleep, rose from 74% to 87%. Assuming eight hours in bed, the authors worked that out as roughly 62 extra minutes of sleep a night, even though these spouses had lived with the snoring for years.

So why didn't sleeping alone help much?

This is where the experts disagree. A 2009 French study in the European Respiratory Journal recruited 23 women who blamed their partner's snoring for poor sleep. Each had one sleep test beside their partner and one alone.

Seven couples had to be dropped, six of them because the woman turned out to snore for more than 10% of the night herself and one because she had sleep apnoea. In the 16 women left, sleep time, sleep efficiency, arousals, deep sleep and REM were not significantly different between the two nights. The authors concluded that one night apart did not substantially improve the non-snoring partner's objective sleep.

A large German family study of 1,181 couples found only weak links between one partner's snoring and the other's sleep quality. So the snoring is real, but changing rooms may not deliver the rest people expect.

Is a "sleep divorce" common outside Singapore?

Very. In a 2023 American Academy of Sleep Medicine survey of 2,005 US adults, 35% said they occasionally or consistently sleep in another room to accommodate a bed partner. Men were far more likely to move out (45%) than women (25%), and millennials led every age group at 43%.

The academy's spokesperson, Dr. Seema Khosla, added a caveat worth keeping: "if it is one partner's loud snoring that is leading to separate sleep spaces, then you should encourage that partner to talk to a doctor about obstructive sleep apnea."

Closer to home, a 2026 survey of 1,000 Singapore workers published by healthcare company Easmed found 25% report loud snoring that others can hear, 13% have had a partner notice breathing pauses or gasping, and 24% screened at elevated risk of sleep apnoea on the survey's questionnaire. A screener is not a diagnosis. We looked at how heat may play into this in Can Hot, Humid Nights Make Sleep Apnoea Worse?

Could sharing a bed actually be good for your sleep?

For healthy couples, possibly. A 2020 German sleep lab study tested 12 young couples, 24 people, over four nights: two nights in separate rooms and two side by side. Sharing a bed was linked to about 10% more REM sleep, less broken REM and longer unbroken REM stretches. The trade-off was more limb movements.

People who reported less social support showed the biggest REM difference between the two set-ups. Notably, these couples each had their own duvet, and nobody in the study snored heavily enough to matter. So a quiet partner may be good company at night. A loud one is a separate problem.

| Study | Who | What changed | Result | |---|---|---|---| | Beninati 1999, Mayo Clinic | 10 couples | Snorer treated with CPAP | Spouse sleep efficiency 74% to 87% | | Blumen 2009, France | 16 women | Slept alone for one night | No significant change in sleep time, deep sleep or REM | | Drews 2020, Germany | 12 couples | Shared a bed vs apart | About 10% more REM when together | | AASM 2023 survey | 2,005 US adults | Sleep in another room | 35% do so at least occasionally |

Where does a weighted blanket fit in a shared bed?

It does not fix snoring, and nobody should treat it as a substitute for getting breathing pauses checked. What it can change is your side of the bed. In a 2020 Swedish trial of 120 adults with insomnia and psychiatric conditions, people given a weighted chain blanket for four weeks reported much lower insomnia severity than those given a light plastic chain blanket, with better sleep maintenance.

The Sleep Foundation notes most weighted blankets are designed for one person, with some larger sizes made for couples. That lines up with the German study's two duvets: each person gets their own covers. In Singapore, where a study of 150 residents found bedrooms averaging 28.4°C at night, two bodies under one heavy layer can trap a lot of heat, so a breathable cooling weighted blanket or a light cooling blanket on your side is easier to live with than a shared fleece. Our weighted blanket sizing guide for Singapore beds covers weights for couples, and NightFury's specifications page lists sizes if you are comparing.

What should you try first?

If your partner snores loudly or you have noticed pauses or gasping, suggest a doctor or a sleep study before anyone moves out.
Give each person their own blanket.
If you do sleep apart, treat it as a practical choice, not a verdict on the relationship, and keep checking whether the snoring itself has been looked at.

Sources

Beninati W, Harris CD, Herold DL, Shepard JW Jr. The effect of snoring and obstructive sleep apnea on the sleep quality of bed partners. Mayo Clinic Proceedings, 1999. https://pubmed.ncbi.nlm.nih.gov/10918859/
Blumen M, et al. Effect of sleeping alone on sleep quality in female bed partners of snorers. European Respiratory Journal, 2009. https://pubmed.ncbi.nlm.nih.gov/19574335/
Drews HJ, et al. Bed-sharing in couples is associated with increased and stabilized REM sleep and sleep-stage synchronization. Frontiers in Psychiatry, 2020. https://pmc.ncbi.nlm.nih.gov/articles/PMC7330166/
Kowall B, et al. Family aggregation of sleep characteristics: results of the Heinz Nixdorf Recall and the Multi-Generation Study. PLOS ONE, 2021. https://pmc.ncbi.nlm.nih.gov/articles/PMC8177478/
American Academy of Sleep Medicine. Over a third of Americans opt for a "sleep divorce", 2023. https://aasm.org/over-a-third-americans-opt-sleep-divorce/
American Academy of Sleep Medicine. Sleep Prioritization Survey 2023: sleep divorce (methodology and tables). https://aasm.org/wp-content/uploads/2023/07/sleep-prioritization-survey-2023-sleep-divorce.pdf
Easmed. Singapore Sleeps 2026 survey. https://www.easmed.com/sgsleepsurvey2026/
Ekholm B, Spulber S, Adler M. A randomized controlled study of weighted chain blankets for insomnia in psychiatric disorders. Journal of Clinical Sleep Medicine, 2020. https://pmc.ncbi.nlm.nih.gov/articles/PMC7970589/
Sleep Foundation. Best weighted blankets. https://www.sleepfoundation.org/best-weighted-blankets
The Straits Times. What's the temperature in the bedroom in Singapore? A muggy 28 deg C, 2026. https://www.straitstimes.com/singapore/environment/whats-the-temperature-in-the-bedroom-in-spore-a-muggy-28-deg-c-says-new-study-on-residents