03/02/2015 07:36 GMT | Updated 20/05/2015 06:12 BST

How Much Sleep You Really Need (An Update)

If you're one of those people who can only function on 8 hours sleep, you're well on the mark when it comes to recommended snooze time duration.


Following the huge popularity of the How Much Sleep Do We Really Need? feature from the National Sleep Foundation in the US, a team of sleep experts have updated findings on exactly how much shut-eye we all need.

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Here's a look at their approximations following research across 312 peer-reviewed articles on sleep duration between 2004 and 2014.

Newborns (0-3 months): 14-17 hours (range narrowed from 12-18)
Infants (4-11 months): 12-15 hours (range widened from 14-15)
Toddlers (1-2 years): 11-14 hours (range widened from 12-14)
Pre-schoolers (3-5): 10-13 hours (range widened from 11-13)
School-age children (6-13): 9-11 hours (range widened from 10-11)
Teenagers (14-17): 8-10 hours (range widened from 8.5-9.5)
Young adults (18-25): 7-9 hours (new age category)
Adults (26-64): 7-9 hours (no change)
Older adults (65+): 7-8 hours (new age category)

So there you have it, a scientific guide to catching up on just the right amount of Zs.

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"This is the first time that any professional organisation has developed age-specific recommended sleep durations based on a rigorous, systematic review of the world scientific literature relating sleep duration to health, performance and safety," Charles A. Czeisler, professor of sleep medicine at Harvard Medical School and chairman of the board of the National Sleep Foundation said in a statement.

These age-specific recommendations bring brand new information to the table, so if you're not getting the right hours in (the huge bags under your eyes and 3pm slump are a giveaway) then it's time to change your sleep routine.

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