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PEOPLE spend almost a third of their lives doing one thing: sleeping. Every year, there is a day for people around the world to _【小题1】_the importance of good and healthy sleep– World Sleep Day. This year, it falls on March 16. The theme is “Breathe (呼吸) Easily, Sleep 【小题2】_”. Sleep is like food for the brain. Enough sleep helps the body and brain grow and _【小题3】_. People of different ages need different amounts of sleep._【小题4】_ to the National Sleep Foundation in the US, adults need seven to nine hours of sleep every night. For students aged 10 to 17, a _【小题5】amount is about eight to nine hours per night. However, many students don’t get enough sleep_【小题6】of early school start times and too much homework. The China Youth and Children Research Center reported that about 80 percent of middle school students don’t get enough sleep. Lack (缺乏) of sleep affects (影响) a person’s life greatly. Students without enough sleep may get poor grades. They cannot pay【小题7】_in class or do well in sports. To solve this problem, scientists give us【小题8】: students should get less schoolwork and more time to sleep. There are some other ways to help people get enough sleep, such as taking a 20-minute nap (午睡)【小题9】the day. Good sleep habits are also helpful. For example, try to go to sleep and wake up at the same time every day, even on weekends and during _【小题10】_.