Sleeping is an extremely important part of being healthy. If you do not get enough sleep, your body will not have the energy to do anything. The amount of sleep is different depending on your age. Infants need 14-15 hours, children need about 10-11 hours of sleep, teens need 8.5-9.5 hours of sleep, and adults need 7-9 hours. As you can see sleep is a very important part of your day. For more detailed information about sleep click here. In order to feel good and healthy the next day, you should get the amount of sleep you are required so you don'f feel drained the entire next day and so you can do things throughout the day.