※ [本文转录自 share 看板] 作者: honercek (Happy Life) 看板: share 标题: [资讯] 睡眠时间应该要多久？ 时间: Thu Jun 12 13:26:26 2008 这一篇是 Time CNN 的文章… 常常有人说一天要睡满 8 小时才够，但是没有任何证据能够说明是否要睡足 8 小时。 他们对睡眠时间做了一些统计，睡眠时间介於 6.5 小时和 7.5 小时的人，活的比较久 。而睡眠超过 8 小时或是少於 6.5 小时的人就没那麽久了。 比较特别的是，睡超过 8.5 小时的人比睡少於 5 小时的人还糟。 统计结果是呈现 U 型，U 型两端正是疾病发生率较高的两个点，分别是睡眠时间极短 和极长。当然这只是个统计，他们也不清楚为何会是这样。如果平常重睡眠的人，硬把 睡眠时间缩短是不是会比较长命，答案也是未知… http://www.time.com/time/health/article/0,8599,1812420,00.html Q: How much sleep is ideal? A: Studies show that people who sleep between 6.5 hr. and 7.5 hr. a night, as they report, live the longest. And people who sleep 8 hr. or more, or less than 6.5 hr., they don't live quite as long. There is just as much risk associated with sleeping too long as with sleeping too short. The big surprise is that long sleep seems to start at 8 hr. Sleeping 8.5 hr. might really be a little worse than sleeping 5 hr.. Morbidity [or sickness] is also "U-shaped" in the sense that both very short sleep and very long sleep are associated with many illnesses—with depression, with obesity—and therefore with heart disease—and so forth. But the [ideal amount of sleep] for different health measures isn't all in the same place. Most of the low points are at 7 or 8 hr., but there are some at 6 hr. and even at 9 hr. I think diabetes is lowest in 7-hr. sleepers [for example]. But these measures aren't as clear as the mortality data. I think we can speculate [about why people who sleep from 6.5 to 7.5 hr. live longer], but we have to admit that we don't really understand the reasons. We don't really know yet what is cause and what is effect. So we don't know if a short sleeper can live longer by extending their sleep, and we don't know if a long sleeper can live longer by setting the alarm clock a bit earlier. We're hoping to organize tests of those questions. One of the reasons I like to publicize these facts is that I think we can prevent a lot of insomnia and distress just by telling people that short sleep is O.K. We've all been told you ought to sleep 8 hr., but there was never any evidence. A very common problem we see at sleep clinics is people who spend too long in bed. They think they should sleep 8 or 9 hr., so they spend [that amount of time] in bed, with the result that they have trouble falling asleep and wake up a lot during the night. Oddly enough, a lot of the problem [of insomnia] is lying in bed awake, worrying about it. There have been many controlled studies in the U.S., Great Britain and other parts of Europe that show that an insomnia treatment that involves getting out of bed when you're not sleepy and restricting your time in bed actually helps people to sleep more. They get over their fear of the bed. They get over the worry, and become confident that when they go to bed, they will sleep. So spending less time in bed actually makes sleep better. It is in fact a more powerful and effective long-term treatment for insomnia than sleeping pills. --

※ 发信站: 批踢踢实业坊(ptt.cc) ◆ From: 140.113.235.152 ※ 编辑: honercek 来自: 140.113.235.152 (06/12 13:26) -- =○# (￣#)3￣) 什麽金牌打手？ | (￣△￣)/ 我家大人..朱字头! ( ￣ c￣)y▂ξ 喔!!山东响马 "猪油渣" 嘛...|╰(‵□′)╯...再打！ --

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