March 21st is World Sleep Day. This year’s slogan is “Breathe Easily, Sleep Well”.

March 21^st is World Sleep Day. This year’s slogan is “Breathe Easily, Sleep Well”. It

   1    to celebrate the benefits of good and healthy sleep.

Sleep is like food for the    2   . Enough sleep helps the body and brain grow and

   3   . According to the National Sleep Foundation in the US,    4    need seven to nine hours of sleep every night. For students aged 10 to 17, a    5    amount is about eight to nine hours per night.

But many students don’t get    6    sleep because of early school start times and heavy   7  . About 80 percent of middle school students don’t get enough sleep, the China Youth and Children Research Center reported. For some students, they want to sleep    8  , but they keep worrying about their schoolwork and can’t fall asleep   9  . For others, they may even have insomnia (失眠症), which might keep them    10    all night.

These sleeping problems greatly    11    people’s life. Experts have shown that lack of sleep for teenagers leads to poor    12   . Students without enough sleep cannot

   13    in class or do well in sports. Also, the lack of sleep may make them depressed.

Research shows that with    14   sleep habits it is easier to fall asleep. Some of these good habits include    15    drinks that make people excited late in the day, going to sleep at the same time each night, and sleeping in a comfortable place that is dark, quiet, and neither too hot nor too cold.

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