Can we train ourselves to need less sleep?
我们可以训练自己不需要那么多睡眠吗？
It's definitely a myth that older people need less sleep.
老年人需要更少的睡眠，这绝对是一个荒诞的说法。
The result shows that the less sleep you get, the less you want to socialize with others.
结果表明，睡得越少，你就越不想和别人交往。
Everyone can have an hour's less sleep.
每个人可以少睡一小时。
People tend to need less sleep as they get older.
上了年纪的人往往觉睡得更少。
People tend to need less sleep as they grow older.
随着年龄增长，人们对睡眠的需求往往在减少。
We can get away with less sleep, but it has a profound effect on our cognitive.
我们可以少睡一点，但那将会会对我们的认知能力产生深刻的影响。
The idea that we need less sleep as we get older is a myth, according to researchers.
研究人员认为，以前那种认为人上了年纪后睡眠时间会减少实际上是错误的。
They note that the males may be weaker, because they get less sleep due to the lights.
他们提道，由于灯光让雄鸟睡眠少了，所以它们身体更加虚弱。
When you get less sleep than that on consecutive3 nights, you begin to accrue4 “sleep debt.”
如果你连续数晚睡眠都少于这个时间，你就要开始负上“睡眠债”。
If you have to choose, I've found that it's better to get a little less sleep than too much.
如果必须要选一个的话，我认为睡眠少一些反而比睡的过长更有利。
The increase in work outside the home was offset by less housework and less spare time and less sleep.
工作时间的增加被较少的家务、休闲和睡眠时间抵消了。
The increase in work outside the home was offset by less housework-and less spare time and less sleep.
工作时间的增加被较少的家务、休闲和睡眠时间抵消了。
If you equate getting older with needing-or getting-less sleep, here's a wake-up call: it's not true!
如果你认为人慢慢长大变老，需要或得到的睡眠更少，那我来提醒你吧，不是这样的！
But now experts have found that it is 7 hours that brings optimal health - and that more or less sleep may do us harm.
然而专家发现，7小时才是黄金睡眠时间，睡多睡少都会有损健康。
But now experts have found that it is 7 hours that brings optional health-and that more or less sleep may do us harm.
然而专家发现，7小时才是黄金睡眠时间，睡多睡少都会有损健康。
The survey found that mothers who suffered PND reported less sleep and less help from family and friends than non-sufferers.
这个调查显示，据患产后抑郁症的母亲自己宣称，和没有患产后抑郁症的母亲相比，她们睡眠比较少，而且得到的家庭和朋友的帮助较少。
It seems people are also trying to squeeze in more time for themselves and their families, even if it means less sleep.
此外，人们仍在尽可能地为自己和家人挤出更多的时间，尽管这意味着睡眠时间会减少。
We may feel more energised in the summer and feel we can get by with less sleep but we need to recognise when to take a break.
在夏天，我们可能感到精神还好，少睡点问题不大，但我们必须知道休息时候就该休息。
The scientists were able to replicate the gene variation in a strain of mice and found that the mice needed less sleep than usual, too.
科学家能够在一种老鼠的身上复制这一基因变异，结果发现，这种老鼠需要的睡眠时间也比平常少了。
Because the cave fish may not need less sleep-they may need to stay awake to forage more in an environment where food can be scarce and appear unpredictably.
因为穴居鱼可能并不需要睡得更少——它们可能需要保持清醒，以便更经常地在食物短缺和食物不常出现的环境中觅食。
Scientists have realized in recent years that children who get less sleep tend to do worse on a variety of health outcomes, including the risk of being overweight and obese.
她还说：“最近几年，科学家已经认识到睡眠少的孩子各种健康指标往往更差，包括容易肥胖等。”
They found that not only do humans need less sleep than chimps, macaques and lemurs, we spend a greater percentage of our slumber in the deeper, more restorative stages of sleep.
他们发现，人类睡眠时间不仅比黑猩猩、猕猴和狐猴要少，而且更多时间是沉睡在更深、更有恢复作用的阶段。
Surprisingly, less sleep, even as little as four hours a night, didn't significantly increase deaths for men and only lowered survival for women if they averaged less than four hours.
令人惊讶的是，如果睡眠的时间更少，甚至每晚只睡4小时，男性的死亡率并没有明显上升。 而如果女性的平均睡眠小于4小时，她们的寿命则会缩短。
Surprisingly, less sleep, even as little as four hours a night, didn't significantly increase deaths for men and only lowered survival for women if they averaged less than four hours.
令人惊讶的是，如果睡眠的时间更少，甚至每晚只睡4小时，男性的死亡率并没有明显上升。 而如果女性的平均睡眠小于4小时，她们的寿命则会缩短。
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