Why Do Married Couples in Japan Sleep Separately

Despite living in smaller homes and apartments, many Japanese couples continue to share beds or even rooms, viewing it as a positive arrangement rather than a sign of relationship issues.

Here are some common reasons why Japanese couples choose to sleep apart—and why these choices make sense.

1. Different Sleep Schedules

A key reason many couples in Japan opt for separate sleeping arrangements is differing work schedules. When one partner arrives home late or leaves early, sleeping in separate rooms helps prevent disruptions to each other’s sleep. This arrangement allows each person to get uninterrupted rest, ultimately supporting their health and well-being.

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2. Babies Sleep with Their Mothers

In Japan, it’s culturally valued for mothers to sleep alongside their young children. This often means the father has to decide whether to share the same bed or sleep in a different room. Studies suggest co-sleeping with mothers can be beneficial, helping children maintain stable heart rates and body temperatures—key factors in infancy. Over time, this practice may even support a child’s academic success, independence, and self-esteem.

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3. For Them, Separate Sleep Brings Peace

While some might associate separate sleeping arrangements with relationship problems, many Japanese couples view it as a way to prioritize rest and peace. Valuing their sleep, they prefer not to deal with issues like snoring, tossing, or kicking during the night. For those who don’t have an option for separate rooms, the desire for undisturbed rest remains strong.

4. A Tradition of Separate Sleeping

Historically, the use of single-sized futons—thin, cotton-filled mats—has meant that cuddling with a partner often left one person without enough space, often ending up on the cold floor. Many Japanese families still prefer futons for their convenience, space efficiency, and ease of storage.

Do you and your partner sleep separately? Could this tradition be something beneficial for your relationship?