Protect your sleep

我们的教育从学生那里夺去了什么？

What did the education steal from our students？

The R.E.M sleep

在一个晚上的睡眠中，人们经历了4−7次REM睡眠

We enter REM sleep four to seven times each night.

往往前期阶段较短，而后期较长，尤其在我们即将自然醒来的时候

They tend to be short in the front and long in the back，while the longest REM sleep happens just when we are about to wake up naturally.

在此期间，你的心率增加，你的血压升高，你的呼吸变得急促，你的大脑同时发出 α、β 和 θ 波 。

During this time, your heart rate increases, your blood pressure increases, your breathing becomes faster, and your brain sends out delta theta, delta theta, and delta theta waves.

事实上，如果测量这个阶段你的大脑消耗氧气的情况，会发现比你清醒状态下做一道最复杂的数学题的时候还多，这说明你的大脑正在高速运转

In fact, if you measure how much oxygen your brain USES at this stage, it's more than if you were doing the most complex math problem while you were awake, which means your brain is firing

睡眠不仅仅是让身体恢复，更是让身体、特别是让大脑成长。而 REM 睡眠，就是成长的关键期。

Sleep is not just for the body to recover, but for the body and especially for the brain to grow. REM sleep, on the other hand, is a critical period for growth.

与此同时，白天学的技能和知识，需要大脑在晚上消化、重组一番，才算真正“长”在了我们身上。这个消化重组的过程，就发生在 REM 期间。

The skills and knowledge learned in the daytime need digesting and reorganized by the brain in the evening before they can truly "grow" on us. This process of digestion and reorganization occurs during REM sleep.

根据REM睡眠长度的变化，我们得出

According to the changes in the length of REM sleep，we can draw a conclusion.

足够的睡眠方能保证我们有效抓住比例最长的REM睡眠

We must sleep long enough to catch the longest REM sleep

参考资料：https://www.jianshu.com/p/0ea0cae1923e （大部分摘自简书）

https://wapbaike.baidu.com/item/REM睡眠/6558924?fr=aladdin&ms=1&rid=9376317636705522785 （百度百科：REM睡眠）