Sleep is important to younger children aged between 1 years old and up to 13 years old. Teenagers and adults don't need as much sleep as children. Adults need about 8 hours of sleep each day. If you want to get good rest stay in a quiet environment. No vibrant colours or loud music. Sometimes your brain needs to relax. When you work hard at school, you have to concentrate. You use your brain to think and thinking makes you tired. After a while your brain needs a rest. At school you have breaks when you can go outside. Playing is a good way to rest the brain. When you go to sleep at night you rest your body and your brain. Your muscles rest. Your brain does not have to concentrate or think.