Everybody requires sleep in order to function correctly. The lack of sleep can really affect how you think and function during the day. There are many problems associated with lack of sleep.
It is important that people get enough sleep during the day or night. Many studies have been done on sleep disorders and people who just don't think it is necessary to sleep. The studies show that a person needs a good 6 to 8 hours of sleep each day. When you are younger your body needs more sleep. This is the same as you grow older too.