虽然我们对睡眠的全部功能还没有完全了解，但不言而喻的是，睡眠对健康的重要性不亚于维生素对人体的作用。

Although we do not fully understand all the functions of sleep, yet it goes without saying that sleep is no less important to human health than vitamins.

我们一般每晚正常的睡眠时间是7-8小时左右，当然个人需要的睡眠量会随一些因素而有所不同。

We normally need to sleep for 7 to 8 hours each night, though the amount of sleep a person needs may vary with some factors from individual to individual.

但是值得关注的现象是，睡眠不足在当今社会中非常普遍。很多人认为睡眠不如工作、娱乐、挣钱等事情重要，以少睡来换取他们认为是更重要的事情。

However, what deserves serious attention is that lack of enough sleep is a widespread phenomenon in today’s society. Many people don’t deem sleep as important as work, entertainment and making money, and they trade less sleep for something they believe to be more important.

睡眠不足导致的睡眠问题已成为威胁世界各国公众健康和生活质量的一个不可忽视的问题。有鉴于此，每年的３月２１日定为“世界睡眠日”，以唤起公众对睡眠重要性和睡眠问题的关注。

Sleep problems due to sleep deprivation have become a non-negligible threat to the public health worldwide. For these reasons, World Sleep Day is launched on March 21st each year to raise the public awareness of the importance of sleep and sleep problems.

充足的睡眠、均衡的饮食和适当的运动，是国际社会公认的3项健康标准。关注睡眠，就是关注健康;提高睡眠质量，就提升了生活质量。

Adequate sleep, a balanced diet and suitable exercise are the three criteria for health accepted by international community. To show concern for sleep is to take care of health; and to improve sleep quality is, therefore, to raise the life quality.

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