*This article is a partial re-edit of "If you're tired, don't sleep on the train on the way home" (Nikkei Business Publications, Inc.) written by Kazuhiro Ito and Setsuko Sada and supervised by Kazuo Mishima.
When you get on the train in the early afternoon, you can see many people dozing in their seats. Everyone is tired.
Photo = iStock.com/aluxum See all images (1)Among business people who are busy with work and don't have much time to sleep, not a few people say that they spend their commuting time sleeping. I'm crawling. For example, even if you only get 5 hours of sleep at home, you can get 6 hours of sleep a day if you sleep 30 minutes each way. But can sleep time be simply added up?
If that's possible, what about silos like "sleep three hours in the evening, then work late at night, then three hours again early in the morning"?
I asked Mr. Kazuo Mishima of the Institute of Mental Health, National Center for Psychiatry and Neurology.
"It's not about how many hours of sleep you should get in a day," Mishima frowned.
"The body has a cycle called circadian rhythm, and whether it is blood pressure, hormones, or autonomic nerves, it works with a 24-hour mechanism. For example, sleeping three times a day is For your body, you live in an 8-hour cycle (24 hours divided by 3), so even if you get 3 hours of sleep per night and a total of 9 hours, it's not good for your body to live a life that doesn't match your body's cycle at all. I don't think so."
Next page 1234"If you're tired, don't sleep on the train on your way home" (Nikkei BP)