You need sleep at all ages,when you are a infant you need around 16 hours of sleep teenagers need around 9-10 hours of sleep.When you are an adult you need around 7-8 hours to have good mental health .
Sometimes it is also hard to get good mental health from sleep because of disorders.40000000 Americans and Canadians each year suffer from chronic long term disorder of sleep every single year.Then an additional 20000000