If you have trouble falling asleep at night, take a daytime nap for less than 45 minutes and don't nap after 3 p.m. in the afternoon.
如果你晚上难以入睡，那么白天小睡要少于45分钟，下午3点以后不要小睡。
If you need a nap, nap no more than 15 minutes (a power nap). Anything longer can make it much harder to fall asleep in the evenings.
如果你要午睡最好不要超过15分钟(闭目养神)，睡的时间越长会让你晚上越难入睡。
The "Nap" group performed significantly better at learning tasks when tested later in the day in comparison to subjects who did not take a lengthy nap.
在下午的学习任务测试中，“午睡”组在学习任务上的表现明显比“清醒”组好。
The modification that makes Everyman what it is is the addition of a "core nap" — a longer nap that occurs regularly somewhere in the 24-hour cycle.
Everyman计划所做的修改就是增加了一个“核心睡眠”，在24小时周期中规律出现的一个长时间打盹。
A siesta is another name for "nap," but it's generally a nap that one takes in the middle of the day, especially after eating or while taking a break from work.
午睡是小睡的另一个说法，但它通常是中午的小睡，尤其是午饭过后或者是工作间隙的休息。
In fact, since one usually feels guilty and stressed when waking up from a nano nap, it is entirely possible that the nap may actually make the napper feel worse.
事实上，人在打盹儿醒来后通常会觉得愧疚或者有压力，所以打盹很有可能会让人醒来之后感觉更糟糕。
In between, some were allowed a nap with REM sleep, some a nap without REM sleep, while the others had a quiet rest period.
一些人虽然小睡但并未进入快速眼动睡眠状态；还有一部分人只是安静地休息了一会儿。
In between, some were allowed a nap with REM sleep, some a nap without REM sleep, while the others had a quiet rest period.
一些人虽然小睡但并未进入快速眼动睡眠状态；还有一部分人只是安静地休息了一会儿。
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