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How many hours sleep do you need each night to remain healthy?

Posted by Dr Michael Crane on 26th Feb 2015

With sleep, experts will tell you that there is no "magic number." Not only do different age groups need different amounts of sleep, but sleep needs are also individual. While you may be at your absolute best sleeping seven hours a night, someone else may clearly need nine hours to have a happy, productive life.

According to the National Institutes of Health, the average adult sleeps less than seven hours per night. In today’s fast-paced society, six or seven hours of sleep may sound pretty good. In reality, though, it’s a recipe for chronic sleep deprivation.

There is a big difference between the amount of sleep you can get by on and the amount you need to function optimally. Just because you're able to operate on seven hours of sleep doesn't mean you wouldn't feel a lot better and get more done if you spent an extra hour or two in bed.

Newborns (0 - 2 months)12 to 18 hours
Infants (3 - 11 months)14 to 15 hours
Toddlers (1 - 3 years)12 to 14 hours
Preschoolers (3 - 5 years)11 to 13 hours
School age children (5 - 10 years)10 - 11 hours
Teens (10 - 17 years)8.5 to 9.25 hours
Adults7 to 9 hours