Sleep is part of a person's daily activity. How many hours do you sleep every day? We are often told that it's important to get enough sleep. Not getting enough sleep has serious effects . The less we sleep,the worse we perform in everyday life. Have you ever felt tired in the daytime?Actually,this is quite normal.A nap ar lunchtime can allow us to study better in the afternoon.If you don’t get enough sleep,you might have problems with your memory.In order to concentrate on our schoolwork or perform wellin tests,we really need to get a good night’s sleep.
帮咱加个结尾吧，急啊