In Japan, bathing is often seen less as something you do in the morning to get ready for the day and more as a way to reset both body and mind after the day is over.
Of course, some people take showers in the morning. But the habit of soaking in a bathtub at home is much more commonly associated with the period after returning home and before going to bed.
The simplest reason is the desire to wash off the day’s sweat and grime before sleeping.
After spending the day outside—sweating, riding trains, going to shops, or working—it can feel uncomfortable to get straight into bed without bathing first. Rather than thinking, “I can wash in the morning,” there is often a stronger feeling that today’s dirt should be washed off today. The bath acts as a boundary between the outside world and the bed.
But physical dirt is not the only thing people may feel they are washing away.
There can also be a sense of letting go of the day’s fatigue, tension, and the thoughts still running around in your head. Washing yourself, soaking in warm water, and coming out feeling refreshed can create the feeling that “today ends here.”
That is also part of why soaking in a bathtub remains important in Japanese bathing culture. A shower cleans the body, but spending time in warm water can also help mark the transition from the outside world to private time at home, and eventually toward sleep.
The time after the bath can be part of the pleasure as well. Some people enjoy cold water or tea afterward, while others may have a beer or another drink. For some, “that first drink after a bath is hard to beat” is part of the small reward at the end of the day.
That does not mean alcohol helps you sleep. The point is simply that the period after bathing can itself be something to look forward to—a moment when you feel clean, refreshed, and finished with the day.
Nor does this mean that Japanese people always bathe immediately before bed. Some bathe soon after coming home, while others do so before or after dinner. In summer, people may take only a shower, and some people also shower in the morning.
Even so, bathing is often done at night because it is more than basic grooming. It is a way to wash off not only the day’s sweat and dirt, but also some of its fatigue and mental clutter, and to bring the day to a close.
If a morning shower helps start the day, the Japanese evening bath often serves the opposite purpose: to finish the day and move toward sleep feeling clean, refreshed, and reset.
References
- Ministry of Health, Labour and Welfare, e-Health Net, “Good Sleep and Daily Habits”
- Society of Heating, Air-Conditioning and Sanitary Engineers of Japan, “Effects of Bathing on Sleep: A Study of Summer Bathing Methods”
- Society of Human-Environment System, “Effects of Bathing Methods and Thermal Conditions at Bedtime on Winter Sleep”
