At three in the morning last Tuesday I was on the sofa in the front room with a blanket and a cold cup of tea, and I want to be clear that nobody had done anything wrong. The man I married snores like a chainsaw working through a tree, which, given that he fixes desalination plants for a living, feels about right, and the four-year-old had migrated into our bed sideways, the way they do, one heel in my kidney. I lay there working out how few hours of sleep were left before the school run, and eventually I gave up and left. It felt like a defeat. Then I read a pile of American survey data the next morning and discovered I had joined a movement.
The movement has an ugly name. "Sleep divorce," they call it, couples who move to separate rooms or separate beds to actually sleep, and the American Academy of Sleep Medicine has been counting them for a few years now. In its 2023 survey, run by Atomik Research across 2,005 U.S. adults, more than a third said they occasionally or consistently sleep apart from a partner. Men were far readier to admit it than women, 45 percent against 25, which tells you something about who thinks they are the problem. When the academy ran the same survey again in 2025, across 2,007 adults, the figure sat at 31 percent, highest among the 35-to-44 crowd at 39 percent and lowest, at 18, among the over-65s, who have presumably made their peace. Read together, the two waves show no decline, just a level around a third.
The generational spread is the part that made me laugh at my kitchen table. In the 2023 numbers, 43 percent of millennials had done it, against 33 percent of Generation X, 28 of Gen Z, and 22 of the boomers. So the cohort forever lectured for killing marriage, napkins, and the doorbell turns out to be the one most willing to say the quiet thing: I love you, and I would like eight hours, and these are not the same project.
Separate beds mean respect, not a marriage gone cold
Here is what pulled me up short. The story we tell about separate beds is a story about the end of something: twin beds, shorthand in old films for a marriage gone cold, the passion drained out and only the mortgage left. The people who study sleep do not read it that way. "Although the term sleep divorce seems harsh," says Dr. Seema Khosla, a pulmonologist who speaks for the academy, "it really just means that people are prioritizing sleep and moving into a separate room at night when needed." In the 2025 release she put it more plainly still: a sleep divorce, she said, "has more to do with mutual respect regarding the sanctity of the sleep space than with a troubled relationship."
And the medicine is not nothing. Khosla's argument runs that poor sleep is corrosive to a couple: the sleep-deprived argue quicker and feel for each other less, and resentment pools around whoever is snoring. The academy estimates around 30 million American adults have sleep apnea and that roughly four in five cases go undiagnosed, which means many people lie awake next to a genuine, treatable problem and call it a personality flaw. Move to the sofa and you may just be managing a symptom. A less romantic sentence than we use about the marriage bed, and maybe a truer one.
Sleeping apart buys better sleep, if only a little
Whether it works is a separate question, and here the numbers come from somewhere else, so I will say so: a Sleep Foundation survey of 1,250 adults, run in January 2023, not the academy's. Only 1.4 percent had started and kept up a sleep divorce for a full year, so the outcome numbers describe the smaller group who had tried it, not the whole sample. Among them, 52.9 percent said their sleep quality improved, and they banked an average of 37 extra minutes a night. Thirty-seven minutes. I have rearranged an entire life around less. Independent of that survey, and quoted in the same write-up, the RAND researcher Wendy Troxel calls the good version a "sleep alliance," a phrase from her 2021 book "Sharing the Covers": two people arranging the night so each is rested enough to be decent by day. The behavioral sleep-medicine specialist Jade Wu, quoted alongside her, is blunter about the inherited assumption. "I think it's a social construct that we've made up that a couple should sleep together," she says, and at seven in the morning I could not muster an argument back.
Going back to bed did not cost them sleep
The figure I keep returning to is the smaller, softer one. In that same survey, again among those who had tried it, 25.7 percent ended up moving back into the shared bed. The top reason, cited by 34.9 percent of returners, was not a bad back or a guest in the spare room. It was that they missed each other. And here is the part that undoes the tidy story: going back did not cost them the rest. The ones who recoupled now sleep about ten minutes more a night than they did apart, and roughly 40 percent said their sleep improved after they returned. They missed each other, they went back, and they slept better for it.
That is the sung part of this, the bit the headline about a third of couples sleeping apart cannot hold. My mother and father shared a bed for fifty-one years, a battlefield of stolen duvet and elbow and the radio left on, and neither of them would have called it hygiene. My husband found me on the sofa at six, said nothing worth quoting, and put the kettle on. I could give you the health case for staying out there. I went back to bed. The four-year-old was still crossways in it, and the room smelled of sleep, and I understood the quarter who go back. The survey people did not even have to choose. My own arithmetic rarely comes out that clean, and I went in anyway. Sometimes you just want the desalination plant where you can hear it.
