But oh, in REM sleep, what dreams may come...

在REM期，我们会做梦。

This doesn't happen for REM sleep.

这在快速眼动睡眠中不会发生。

It is completing a full sleep cycle including REM sleep.

它包含一个完整的睡眠周期，包括快速眼动期睡眠。

Interestingly, REM sleep increases in duration throughout the night.

有趣的是，一晚的快速眼动睡眠时间会增加。

Just two drinks or more cut REM sleep, which is important for memory and health.

喝两杯以上的酒会阻碍 REM 睡眠（快速动眼睡眠），而 REM 睡眠对记忆和健康很重要。

During REM sleep, those same parts of the brain are active.

在快速眼动睡眠期间，大脑中同样的部分是活跃的。

Other animals, including some birds and mammals, have been shown to experience REM sleep.

其他动物，包括一些鸟类和哺乳动物，已被证明会经历快速眼动睡眠。

In primates like lemurs or monkeys, REM sleep does not reach the five percent mark.

而狐猴或猴子之类的灵长类，其快速眼动睡眠竟然不及5%。

We have twice as much Non-REM sleep as Rapid Eye Movement sleep each night.

每天晚上，我们的非快速眼动睡眠时间是快速眼动睡眠时间的两倍。

In part, that's because some people just have more brain activity during REM sleep.

在某种程度上，这是因为有些人在快速眼动睡眠期间大脑活动更频繁。

Then, you enter REM sleep, which lasts about 10 to 20 minutes in a nap.

然后，你进入快速眼动睡眠阶段，这种小睡会持续大约10到20分钟。

Meaning Rapid Eye Movement, REM sleep is the deep sleep phase where the brain is most active.

快速眼动睡眠的意思是眼球快速运动，这是大脑最活跃的深度睡眠阶段。

This non-REM sleep is when DNA is repaired and our bodies replenish themselves for the day ahead.

DNA在这段非快速眼动睡眠期被修复，我们的身体也补充能量以准备迎接新的一天。

Non-REM sleep is when our brain and body slow down. Our heart rate slows and our breathing is regular.

非快速眼动睡眠时，我们的大脑和身体活动减少，心跳变慢，呼吸均匀。

However, some scientists suggest that once in REM sleep, it's the closest we'll ever get to an alternate world.

然而有一些科学家表明一但进入快速眼球运动睡眠阶段（REM），这时候我们离另一个世界是最近的。

While REM sleep is considered a light or wakeful state, it's also the stage where you're most likely to dream.

虽然快速眼动睡眠被认为是浅眠或易醒状态，但也是在这个阶段，人最有可能做梦。

Your first period of REM sleep lasts approximately 10 minutes, while the last period can last up to an hour.

第一次快速眼动睡眠时间大概持续十分钟，而最后一次可持续一小时。

REM sleep, on the other hand, with its similarity to waking brain activity, is associated with the consolidation of procedural memory.

同时， 快速眼动睡眠， 跟大脑醒着的时候相似，跟程序性记忆的巩固有关。

The final stage of each sleep cycle is REM sleep, which first occurs about 90 minutes after your sleep cycle begins.

每个睡眠周期的最后阶段是快速眼动睡眠，首次出现在睡眠周期开始的 90 分钟后。

That said, sometimes talking in your sleep can be caused by certain sleep disorders, like REM sleep behavior disorder or night terrors.

话虽如此，有时，说梦话可能是由某些睡眠障碍引起的，比如快速眼动睡眠行为障碍或夜惊。