Scientists have discovered remarkable new evidence showing how the body rebuilds itself while we sleep.
科学家们已经发现了非同寻常的新证据，证明睡眠时我们的身体如何自行恢复。
We wear pajamas to keep us comfortable when we sleep.
睡觉时，我们穿上睡衣裤保证舒适。
There is a hypothesis that we sleep so that our brain can repair and refresh itself.
有一种假设是，我们睡觉是为了让大脑自我修复和更新。
When we sleep, for example, the saliva stream slows, and sulfur producing bacteria gain the upper hand, producing classic "morning breath".
例如，当我们睡觉时，唾液流变慢，产生硫的细菌占上风，便会产生典型的“晨起口臭”。
Science tells us that we sleep better in cooler temperatures of about 60 to 67 degrees Fahrenheit (15℃ to 20℃).
科学告诉我们，我们在60到67华氏度（15到20℃）的凉爽温度下睡得更好。
The bedroom is the main place where we sleep at night, so its environment directly affects the quality of our sleep.
卧室是我们晚上睡觉的主要场所，所以它的环境直接影响我们的睡眠质量。
After we sleep for 7 or 8 hours in bed and wake up next morning, our mind is better prepared to memorize and learn something.
我们在床上睡了7到8个小时，第二天早上醒来后，我们的大脑就会更好地去记忆和学习一些东西。
今晚，我们将睡在山洞里。
我们在船上睡么？
The bedroom is where we sleep.
卧室是我们睡觉的地方。
Why do we sleep and why don't we — why aren't we always awake?
我们为什么会睡觉，我们为什么不是一直醒着？
(Read about secrets of why we sleep in National Geographic magazine.)
(请参考国家地理杂志《睡眠的奥秘》一文)。
Over the years, scientists have come up with a lot of ideas about why we sleep.
关于我们为什么要睡觉，多年来，科学家提出了很多想法。
I mean, think about it, we sleep, we wake up, and we magically feel refreshed, right?
我的意思是，仔细想想，我们睡觉，我们醒来，我们魔法般地感受到了精神的恢复，是吗？
Unfortunately there are only 24 hours in a day, and we sleep for about 8 of them.
不幸的是一天只有24个小时，其中有8小时用于睡眠。
Our brains seem to know this and practice responding to threatening situations while we sleep.
我们的大脑似乎对此很清楚，在我们进入睡眠时不断练习对危急情况的反应。
As we sleep, our brains work through the day's memories, focusing on the most emotionally resonant parts.
当我们睡眠时，我们的脑部对白日的记忆进行工作处理，聚焦于最能引起情感共鸣的部分。
In other words, the brain is active even when we are asleep - and the more active the thalamus, the better we sleep.
换句话说就是，当睡着了的时候，我们的大脑仍然是活动的，并且丘脑的活动越频繁，我们就睡的越好。
What is important is that every day we receive a present, wrapped especially for us while we sleep: THE NEXT day.
重要的是，每天在我们睡觉的时候都会收到一个特别为我们而包装的礼物：新的一天。
It's possible that while we sleep, the brain is practicing and running problem-solving drills before completing actions in the real world.
当我们睡梦中，很可能我们的大脑会为现实世界中的行动提前做解决难题的演练。
But I really want you can hold me in your arms when we sleep, take my hand when we walk together, put the food you do not like into my plate, and much more than these!
可是我想你睡觉的时候可以抱着我，走路的时候可以勾住我的手，吃饭的时候可以把不好吃的菜放到我的盘子里，比这都更多更多。
Learning by listening to information as we sleep has long been a mainstay of science fiction-and wishful thinking-but a new study suggests the idea may not be so farfetched.
长久以来人们认为在睡眠时收听资料来进行学习是天方夜谭，是痴心妄想，但是最新的一项研究发现这种方法也不一定是不可能的。
Using a flood of new tools and technologies, each of us now has the ability to easily collect granular information about our lives—what we eat, how much we sleep, when our mood changes.
运用新的工具和科技，我们现在可以轻松地获得关于身体方面的信息---我们吃了什么，我们睡了多长时间，我们的情绪什么时候发生了变化。
We sleep well. We say a lot of prayers.
我们睡得很好，也作了许多祈祷。
We sleep out under the stars, and eat our meals in the open air.
我们露宿在星空下，在户外用餐。
We sleep out under the stars, and eat our meals in the open air.
我们露宿在星空下，在户外用餐。
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