Amazingly, they recovered virtually none of the sleep that was lost during the five-day sleep deprivation period.
令人惊讶的是，他们并没有恢复熬夜5天时的睡眠补充方式。
In general, each of us needs about 8 hours of sleep each day to keep us healthy and happy.
一般来说，我们每个人每天需要大约8个小时的睡眠，以维持健康和保持愉悦。
We text our friends with them during the day, sleep with them by our beds and check our messages as soon as we wake up.
我们白天和他们一起给朋友发短信，和他们一起睡在床上，一醒来就查看短信。
The most common topics they discussed included kids' sleep, nutrition, discipline, behavior problems and day care and preschool.
他们最常讨论的话题包括孩子的睡眠、营养、纪律、行为问题，以及日托班和幼儿园。
Some may simply go to sleep early, so they can be energized for an early New Year's Day hike—perhaps while wearing underwear that suits their mood, and wishes for the New Year.
有些人可能只是早早睡觉，这样他们就可以精力充沛地提前开始新年徒步旅行——也许他们还可以穿着符合心境的衣服，并许下新年愿望。
Every year, there is a special day for people around the world to celebrate the importance of good and healthy sleep—World Sleep Day.
每年，世界各地都有一个特殊的日子来纪念良好和健康睡眠的重要性——世界睡眠日。
An elderly person may nap during the day and then sleep only five hours a night.
上了年纪的人白天会小睡一会儿，然后晚上只睡5个小时。
"We wake up from dreams happy or depressed, and those feelings can stay with us all day," says Stanford sleep researcher Dr. William Dement.
“我们从梦中醒来时的高兴或沮丧情绪会伴随我们一整天。”斯坦福睡眠研究博士威廉·德门特博士说。
Right now, a billion people are chronically hungry. That means they wake up hungry, they are hungry all day, and they go to sleep hungry.
现在，10亿人长期处于饥饿状态，这意味着他们醒来时会感到饥饿，整天饿着肚子，睡觉时也是如此。
Right now, a billion people are chronically hungry which means they wake up hungry; they are hungry all day and they go to sleep hungry.
现在，10亿人长期处于饥饿状态，这意味着他们醒来时会感到饥饿；他们整天饿着肚子，睡觉时也饿着肚子。
It was easy for us to go to sleep at the end of the day feeling a little misunderstood.
在一天结束的时候，我们很容易在被误解的感觉下入睡。
During the day, your brain is a beehive of activity—during NREM sleep, it is barely humming.
在白天，你的大脑就像一个活跃的蜂窝——在非快速眼动睡眠期间，它就几乎没有嗡嗡声了。
In places like Bali and New Guinea, people tend to slip in and out of sleep as they need it, napping more during the day, and getting up more at night.
在有些地方，例如巴厘岛和新几内亚，人们喜欢随时根据需要进入睡眠和醒来，白天时不时的打个盹儿，晚上却经常的爬起来不睡觉。
Reducing the amount of sleep students get at night has a direct impact on their performance at school during the day.
减少学生晚上的睡眠时间会直接影响他们白天在学校的表现。
The most common topics they discussed included kids' sleep, nutrition, discipline, behavior problems, day care and preschool.
他们最常讨论的话题包括孩子的睡眠、营养、纪律、行为问题、日托和学前教育。
A 2008 British study found that compared to getting more nighttime sleep, a mid-day nap was the best way to cope with mid-afternoon sleepiness.
2008年英国的一项研究发现，与获得更多的夜间睡眠相比，午间小睡是应对午后困倦的最佳方式。
A 2008 British study found that compared to getting more nighttime sleep, a mid-day nap was the best way to cope with the mid-afternoon sleepiness.
2008年英国的一项研究发现，与获得更多的夜间睡眠相比，午间小睡是应对午后困倦的最佳方式。
An adult koala normally eats between 0.5 and 0.8 kg of leaves a day, Koalas sleep about 20 hours a day.
一只成年考拉通常一天吃0.5到0.8公斤的树叶，一天大约睡20个小时。
Children need 10-12 hours of sleep a day.
儿童每天需要10-12个小时的睡眠。
Middle school students should have at least 8 hours' sleep every day.
中学生每天至少应该保证8小时的睡眠时间。
In general, babies need fifteen to sixteen hours of sleep a day.
一般来说，婴儿每天需要15到16个小时的睡眠。
They can sleep 20-22 hours a day.
他们一天可以睡20-22个小时。
Cute koalas sleep around 18 hours a day.
可爱的考拉一天大约睡18个小时。
Teenagers need 8-10 hours of sleep a day because they need lots of energy to grow into their adult bodies.
青少年每天需要8-10个小时的睡眠，因为他们需要大量能量来长成成年人的身体。
They can sleep at most 8 hours a day.
他们一天最多睡8个小时。
One day, Zak asked his grandfather, "When you sleep, do you put your beard over or under the quilt (被子)?"
一天，扎克问他的爷爷：“你睡觉时会把胡子放在被子上面还是被子下面？”
Most people need seven or eight hours of sleep to feel their best during the day.
大多数人需要七到八小时的睡眠才能在白天保持最佳状态。
After a long day, Tom lay down on the bed and went to sleep.
经过漫长的一天，汤姆躺在床上睡觉了。
After a long day, Tom lay down on the bed and went to sleep.
经过漫长的一天，汤姆躺在床上睡觉了。
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