HealthIs 8 hours of sleep really the right amount for you? Understanding your personal chronotype could be a better way to approach how much time you should spend in bed 20 January 2025 Dong QiuWould we feel better if we slept a bit more? Possibly but it isnt guaranteed. While we know the amount of sleep the average person needs, there is a lot of variation. To get a better idea about how many hours you require and how and when to get it lets start with the basics.This article is part of special series investigating key questions about sleep. Read more here.According to the US National Sleep Foundation, a typical adult needs between 7 and 9 hours per night, although we begin life needing a lot more newborns sleep 14 to 17 hours, and this gradually decreases through childhood. Teenagers need about 9 hours a night and people over 65 tend to need around 7 to 8 hours. Sex can also be a factor. There are some studies that show women, on average, need about 20 minutes more than men do, says Veena Kumari at Brunel University of London. And there is evidence that humans, just like many animals, tend to sleep a little longer during winter, too.Of course, there are exceptions. A rare genetic trait called familial natural short sleep sees individuals habitually going to bed late and waking up early, thriving on just 4 to 6 hours. We dont know how prevalent this is, says Liza Ashbrook at the University of California San Francisco, who has identified a number of gene variants involved in the trait, but its a minority.Most of us arent that lucky, although the occasional disturbed or shortened night doesnt matter too much. We are able to get through a night with no sleep and more or less function