揭秘：当你睡觉时你的身体在做什么_时事

揭秘：当你睡觉时你的身体在做什么

我们一生当中的三分之一都是在睡眠中度过的。睡眠如此重要，但是我们对睡眠却知之甚少，就连科学家也无法完全破解睡眠密码。当你睡觉的时候，你大概不知道，你的身体依旧忙碌得很呢！那么，你睡着之后身体都在忙些啥呢？

1. KEEPING TIME 生物钟仍在运行

You might be asleep but your hypothalamus is not. It's carefully keeping time for you as part of your circadian rhythm. This not only helps you feel tired so that you go to sleep with the release of melatonin, but a protein called PER is released in the morning that gradually wakes you up, often right before your alarm clock is set to go off.

你也许睡着了，但你的下丘脑没有睡。它还在一丝不苟地运行着生物钟。下丘脑会分泌褪黑激素，让你感到困倦，到了早晨，则会释放一种名为PER的蛋白质，让你逐渐苏醒，通常会在闹钟快响的时候把你叫醒。

2. SPOUTING OFF 说梦话

What do you have to say when you're asleep? Sleep-talking or somniloquy can range from random noises to complete sentences. About 5 percent of adults do it (it's slightly more common in children), and it can happen during any stage of sleep. It's most common in men and kids, and can be brought on by fever, sleep deprivation, stress, anxiety, or depression. Don't worry though—there's no evidence people tell their deepest, darkest secrets while asleep. The biggest concern may be that you're keeping your sleep partner awake.