Have you ever stayed up late one night? Did you feel tired the next day? Did you feel bad-tempered? It is because your body missed its sleep! So why does a good night’s sleep make you feel better?
Scientists have studied sleep to find the answer to this question. They have found some different reasons.
First, sleep helps your body stay healthy. 1 Even though you are sleeping, your body is still active. Sleep gives your body a chance to repair itself.
Sleep also helps your body to rest. How? Your body does not need as much energy when it slows down. The beat of your heart and your breathing rate become slower, which 2 lowers your body’s energy level. Your body needs rest after a busy day.
Sleep is important for your brain, too. During the day your brain gathers information. At night while you are sleeping, your brain reviews everything that you did during the day. It saves some of your experiences so you can remember them. Some scientists think all this reviewing causes you to dream.
What happens if you do not have enough sleep? People who miss too much sleep have trouble paying attention. They make more mistakes in their work. Scientists believe that people who miss more than three days of sleep may become sick and even start seeing something that is not really there.
Students need between 8 and 10 hours of sleep each night. What can you do to help give your body a good night’s sleep?
Ways to help you sleep
★Run and play outside during the day.
★Drink a glass of milk before going to bed.
★Go to bed on time.
★Read a book in bed.
★Have a dark, quiet room.
Follow these steps and you will begin to feel relaxed and happy. Nothing else will help your body like a good night’s sleep.
1、请把（1）处画线的句子翻译成汉语。
2、What does “lower” mean in Paragraph 4?(可以使用英语或汉语)
3、What happens if you do not have enough sleep according to the passage?(列举一条)
4、How many ways are mentioned to help you sleep?
5、Give a title (标题) to the passage.