How can you take naps during the day without ruining your sleep at night?

你如何在白天午睡又不影响晚上的睡眠呢？

Try adopting a more regular sleep schedule, being tired is not only a product of sleep deprivation or waking up out of a deep sleep, but also lacking a consistent schedule.

试着更有规律的睡眠，会觉得累不仅是因为睡不够，或是从深层睡眠醒来，不规律的睡眠习惯也有关系。

An unhealthy sleep cycle makes it difficult to fall asleep and stay asleep, but that doesn't explain why you consistently wake up between two and four in the morning.

不健康的睡眠周期会导致入睡和安睡困难，有解释为什么凌晨两点至四点你会一直失眠。

Also, abnormal firing during sleep can affect brain areas involved in memory and learning.

此外，睡眠时不正常的冲动会影响大脑中与记忆和学习有关的区域。

But researchers are increasingly focusing on sleep patterns, and in particular the impact of irregular sleep – defined as variations in the time a person goes to sleep and wakes up.

研究人员越来越关注睡眠模，尤其是不规律睡眠的影响——即一个人入睡和醒来的时间变化。

Although REM sleep is not classified as a type of deep sleep, it is only reached after the brain has passed through deep sleep stages.

REM 睡眠并不属于深度睡眠的范畴，只有在经过深度睡眠后，大脑才能进入REM 睡眠。

But until the recent study, health researchers did not know much about the effects of inconsistent sleep, including nightly changes in sleep amount and timing.

直到最近的这项研究公布，健康研究人员才了解睡眠不规律的影响，包括夜间睡眠量和时间的变化。

He said scientists do not yet know if the gains from microsleep are the same as gains from longer periods of time.

他说，科学家还不知道微睡眠的益处是否与长时间睡眠的益处相同。

Doctors do not know why sleep occurs, but they do all agree that it is essential for our survival.

医生还不清楚睡眠发生的原因，是他们都认为睡眠对于人类生存非常重要。

As warmer weather arrives, be wary of bear dens and do your best to not disturb their slumber.

随着天气变暖，要小心熊窝，尽量不打扰它们的睡眠。

Conversely, research in sleep-deprived college students has found their unpredictable sleeping habits weaken their entire circadian system.

相对的，对睡眠缺乏大学生的研究发现不稳定的睡眠习惯弱化他们的整个生物钟。

An irregular sleep cycle leaves you feeling foggy, fatigued and unproductive.

不规律的睡眠周期会让你感觉昏昏沉沉、疲惫不堪、工作效率低下。

But they concluded that the findings suggest that irregular sleep was strongly associated with a risk of major adverse cardiovascular events in adults, irrespective of whether or not recommended sleep quotas were met.

他们的结论是，研究结果表明，无论是否达到建议的睡眠时长，不规律的睡眠与成人发生主要心血管不良事件的风险密切相关。

Sleep occupies nearly a third of our lives, but many of us give surprisingly little attention and care to it.

睡眠几乎占据了我们生命的三分之一，可令人惊讶的是， 许多人并不关心他们的睡眠。

If you don't get enough sleep - or keep an irregular sleep schedule - your brain misses out on those stages of cognitive storage.

如果睡眠不足或保持不规律的睡眠时间，大脑就会错过这些的认知存储。

The new study found irregular sleep – going to bed and waking up at different times each day – was " strongly associated" with a higher risk of major adverse cardiovascular events.

这项新研究发现，不规律的睡眠——每天在不同的时间睡觉和起床——与患主要心血管疾病的高风险“密切相关”。

However, irregular sleepers may need to make more significant changes, and those changes require an in-depth understanding of why your body struggles to sleep through the night.

然而，睡眠不规律的人可能需要做出更大的改变，而做出这些改变需要深入了解你的身体，为什么会整晚难以入睡。

Are there any unusual sleep myths that we missed?

有有我们错过的不寻常的睡眠神话？

In one of them, 38-year-old Stephen Venables twitches and groans in a fitful sleep.

其中一人，38岁的斯蒂芬·维纳布尔斯，在不安稳的睡眠中不时抽搐并发出呻吟。

It's called " The Politics of Sleep." It was written by a lecturer at the university that I just graduated from, so, I'm hoping to learn a little bit more about what happens when you don't police your sleep, or something like that.

这叫做《睡眠的政治学》。 它是我的母校的一位讲师写的，所以我希望可以从中学到一些关于不管理你的睡眠会发生什么，或者类似的内容。