A 40-minute nap might give you some extra REM sleep, but you'd likely sleep past the REM phase and wake up tired, which can mess up that whole cycle.

一个40分钟的小睡有可能给你一些额外的REM睡眠，但也有可能你已经进入深度睡眠了。

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They tested whether "incubating" a problem allowed a flash of insight, and found it did, especially when people entered a phase of sleep known as REM.

他们测试“孵化”一个问题能否使灵光乍现，结果表示是能够的，特别是当我们进入一个称为REM的睡眠阶段。

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REM is the most important phase of sleep, the one in which you experience dreams, and when deprived of REM for too long, you suffer serious negative consequences.

REM就是你正在做梦，它是睡眠中最重要的一个阶段。如果长时间剥夺REM，你将会遭受严重的负面影响。

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