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9-12. These ages are the growing years and lack of sleep can cause all sorts of problems including lack of growth.

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Q: How many hours sleep is recommended for 11 to 21 year olds?
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Related questions

How many hours of sleep do 12-13 year olds need?

you should sleep about 8 or more hours from Amy lee


How many hours of sleep 5 to 12 year olds need?

Children need 8 hours.


How many hours of sleep do 12-13 year olds get?

They should usually have around 9 to 9 + a half hours sleep per night.


How many hours of sleep should 8 year olds get?

An 8 year old should get 8 hours of sleep because that's what a doctor would recommend


How many hours should a 13 year old sleep?

13 year olds should sleep at least 8-10 hours. If you don't get at least 8 hours, you won't get your full rest.


How many hours of sleep should a ten year old be getting?

A 10 year old needs about 10 hours of sleep each night.


How should a child sleep?

Depends on the age of the child. New Born to 3 years old should get 12-18 hours of sleep 3 Year to 5 year olds should get 11-13 hours of sleep 5 year to 12 year old should get 10 -12 hours of sleep 12- 18 year olds should get 8.5 -10 hours of sleep 18 and up should get 7.5 - 9 hours of sleep


How long are kids ages 13 and 14 supposed to sleep?

maney think 8 hours is how long but really 14/13 year olds need to sleep for about 9 hours


How long should a child sleep?

Depends on the age of the child. New Born to 3 years old should get 12-18 hours of sleep 3 Year to 5 year olds should get 11-13 hours of sleep 5 year to 12 year old should get 10 -12 hours of sleep 12- 18 year olds should get 8.5 -10 hours of sleep 18 and up should get 7.5 - 9 hours of sleep


How much sleep should eight year olds get?

Eight year olds should get about 8-10 hours of sleep every night. Times DO vary with the individual needs of the child, but after at least 8 hours, they will wake up feeling better-rested, energized, and ready for the day.


How long should 11 year olds sleeep?

Children need 8 hours sleep to recuperate and refresh.


Do two year olds sleep in beds or cribs?

two year olds can sleep in both