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小尾巴猪 发表于 2012-1-14 09:52

长期缺觉补不回来

[font=宋体]Sleeping in on Saturday after a few weeks of too little shuteye may feel refreshing, but it can give a false sense of security.[/font]

[font=宋体]    New research shows chronic sleep loss cannot be cured that easily. Scientists teased apart the effects of short- and long-term sleep loss and found that the chronically sleep-deprived may function normally soon after waking up,but experience steadily slower reaction times as the day wears on, even if they had tried to catch up the previous night.[/font]

[font=宋体]    It is work with important safety implications in an increasingly busy society, not just for shift-workers but for the roughly one in six Americans who regularly get six hours or less of sleep a night.[/font]

[font=宋体]    "We know that staying awake 24 hours in a row impairs performance to alevel comparable to a blood-alcohol content beyond the legal limit todrive," said lead researcher Dr. Daniel Cohen of Boston's Brigham andWomen's Hospital.[/font]

[font=宋体]    But when the chronically sleep-deprived pull an all-nighter, "the deterioration is increased tenfold," Cohen said.[/font]

[font=宋体]    The National Institutes of Health says adults need seven hours to ninehours of sleep for good health. Regularly getting too little increasesthe risk of health problems, including memory impairment and a weakenedimmune system. More immediately, too little sleep affects reactiontimes; sleepiness is to blame for car crashes and other accidents.[/font]

[font=宋体]    The new work shows how two different sleep drives impact the brain, oneduring the normal waking hours and the other over days and weeks ofsleep loss.[/font]

[font=宋体]    It has critically important ramifications for anyone who works "crazy hours" and thinks they are performing fine with a few hours of weeknight[/font]

[font=宋体]    sleep, said Shelby Freedman Harris, behavioral sleep-medicine directorat New York's Montefiore Medical Center, who was not involved with thenew research.[/font]

[font=宋体]    "Don't think you can just bank up your sleep on the weekend, because it doesn't work that way," Harris warned.[/font]

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tingroom 发表于 2012-1-16 16:12

怎么有时候会觉得越睡越困呢。

凉茶 发表于 2012-1-17 12:19

我在学校一般就7小时左右睡眠。一到家就12+小时了~

llakana 发表于 2012-2-19 14:32

I can't sleep well in the school.

冷暖自知 发表于 2012-3-21 20:10

It is too terrible

Iridescent_Y 发表于 2012-4-8 22:15

一般星期六睡午觉一直睡到晚上……

溪2012 发表于 2012-5-6 15:56

that is terrible,I want to make up for it:'(

锋平彬 发表于 2012-6-5 10:06

我在努力中

reallyzr 发表于 2012-9-13 21:58

it's too terrible

kobe 发表于 2012-9-14 07:43

不错的帖子!

yoyo1211 发表于 2013-10-24 19:22

每天要保证8小时的睡眠时间。

eternalyan 发表于 2014-2-17 10:59

我基本上每天都缺觉,每天都睡不醒。

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