Is there a best time to sleep? There is a saying that sleeping early and waking up early is good for your health. How true is that? Is it alright to sleep late and wake up late? You actually has an amazing biological clock ticking inside your body. It is very precise. It helps to regulate your various body functions including your sleeping time.

是否存在一个最佳的睡眠时间？有一种说法是早睡早起有益健康。这有几分可信？晚睡晚起呢？实际上，你体内有一个非常精确的生物钟在滴答作响。它帮你调节身体各个功能，包括睡眠时间。

From 11pm to 3am, most of your blood circulation concentrates in your liver. Your liver gets larger when filled with more blood. This is an important time when your body undergoes detoxification process. Your liver neutralizes and breaks down body toxins accumulated throughout the day. However if you don’t sleep at this time, your liver cannot carry out this detoxification process smoothly.

晚上11点到凌晨3点这段时间，肝脏集中了大部分的血液循环。肝脏里血液变多、体积变大。身体排毒的这个过程是非常关键的。体内全天累积的毒素会被肝脏中和、分解，但如果你在这段时间没睡，肝脏就无法顺利排毒。

If you sleep at 11pm, you have full 4 hours to detoxify your body. If you sleep at 12am, you have 3 hours. If you sleep at 1am, you have 2 hours. And if you sleep at 2am, you only have 1 hour to detoxify. What if you sleep after 3am? Unfortunately, you won’t have any time to actually detoxify your body. If you continue with this sleeping pattern, these toxins will accumulate in your body over time. You know what happens next.

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