According to a recent study of international sleep numbers from 28 countries, Japanese men and women get, on average, 6 hours and 35 minutes of sleep per night.
The international average is 45 minutes less than the 7 hours and 20 minutes.
Women in Finland and Belgium get 7:45; while Finnish men get 7:24.
Women in Estonia get 7:44; while men in Estonia get 7:23.
Women in Holland and Canada get 7:41.
Women in Austria get 7:36, Men get 7:21.
Interesting, I suppose. I get such little sleep because I'm up writing to stupid hours of the morning... staying up until 3AM on the weekends to work on a blog (Pioneers of Aviation)... once I start, it's difficult for me to stop as I lose track of the time until my cat comes into the room to provide a claw to my thigh to tell me I've had enough.
I don't need much sleep, it seems. I have sleep apnea, but use a C-Pap machine every night. As such, I get a good solid sleep when I choose to sleep.
I wake up refreshed, and never yawn or feel tired. I tend to only go to sleep because I see the clock on the phone next to my computer and realize I should go, even though I'm not tired. That's me.
I wouldn't recommend the schedule to others. Some might say my sedentary lifestyle allows me to conserve my energy all day long.
It's true, that as a writer I am physically inactive, but my brain needs to be bloody sharp. As well, if you've heard about Los Angeles rush hour drives being stupidly difficult, Toronto drives are worse, and longer. I have to be alert. I also coach hockey and baseball, so I have activities after work, and am not always plopping down in front of the TV, though I enjoy doing that when the time is there.
How much sleep does one need? As usual, your own body will tell you.
I could use more sleep, I suppose...
Does Japan? Six hours and 45 minutes a night seems like a heck of a lot to me.
Perhaps the people they timed are good with that amount.
Could we be better with more sleep? How do you prove it? Every person has a different lifestyle, and so requires different levels of sleep to recover. How do you measure for different levels of effectiveness amongst individuals?