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How much sleep do we need? [复制链接]

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1
发表于 2002-10-23 02:23
The amount of sleep an individual requires varies from person to person, but most adults average eight hours of sleep.
Sleep plays a vital role in our daily regimen, as during this dormant period, it recharges and rejuvenates weary body organs and tissues, and restores the body to an alert state. A person's lifestyle is another variable in the amount of time he needs to achieve this healthy balance, and to feel well rested upon awakening.

The quality of a person's sleep also factors into the sleep equation. When we drift off to sleep, we either fall into a deep, restful sleep, or into a shallow, light sleep. One who normally requires eight hours of sleep, but sleeps shallowly, will most likely awaken feeling tired. In contrast, if the same individual sleeps fewer hours, but lapses into a state of deep sleep, he may well awaken refreshed and invigorated.

A lucky few can bypass shallow sleep altogether, and fall directly into deep sleep on an as needed basis. Alexander the Great's military prowess may have been due, in part, to his ability to take a "cat nap."

Yet one more variable factors into the amount of sleep we require: that of the brain and of the body sleeping simultaneously. Under normal circumstances, the brain's sleep center blocks off the nerves to the brain and to the body to make sleep possible. The brain has no interest in doing anything, and could not even if it did, because the sleep center has shut down the internal organs, the arms, and the legs. Sometimes, however, the sleep center is unsuccessful in shutting down both the brain and the body at the same time. For example, in times of war, it is not unusual for soldiers suffering from sleep deprivation and from combat fatigue to continue to march, despite the fact that their brains have halted. Thankfully, such a situation is an anomaly, and does not occur with great frequency.
  

-note------------------------------------------------------
regimen: 生活制度
rejuvenate:使恢复,使年轻
invigorated:精神焕发的
prowess:威力
privation:剥夺
anomaly:不正常的

[em11]
revelation = easy

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2
发表于 2002-10-23 04:57
8 hours sleep seems not enough for me.
有没有一首歌会让你想起我。。。

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3
发表于 2002-10-25 02:35
I will sleep as much as i can.

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4
发表于 2002-10-26 04:48
8 hours is the minimize for me.

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5
发表于 2002-10-28 03:38
the same with easy
上帝对你关了门,又在另一处开窗。

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发表于 2002-10-29 11:22
the same with 冰狐

as much as possible

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发表于 2002-10-29 23:26
i sleep for 8 hours a day


[此贴子已经被作者于2002-10-29 9:26:52编辑过]


revelation = easy

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8
发表于 2002-11-1 07:55
be careful of fat ,hoho  [em11]
revelation = easy

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9
发表于 2002-11-1 10:22
poguanzi po shuai
sizhu bu pa kaishui tang

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10
发表于 2002-11-1 12:05
garfield, what are u saying? i can't understand the sentence
revelation = easy
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