According to most studies, teens (including 16 year old boys) need at least NINE hours of sleep nightly (9 1/2 hours is better) ! Studies also show that most teens do not get enough sleep. However, when they do, they get better grades and do better in sports and other activities.
About 8 1/2 hours. But 10 is recommended.
A mimimum of 8 hours and a maximum if 12
9-12 year olds should sleep 10-12 hours and 13+ should have 8-10 hours sleep
The average sleep time of a 4 year old is about 5-8 hours. Or about 5-8 minutes.
9 hours
Most studies average 7 to 9 hours.
on average you sleep 9 hours a day and there is 365 days a year so 9 X 365 = 3285 hours a year and you live for approximately 60 years so on average you sleep for 197100 hours in 60 years !
12 hours sleep needed
9-12 year olds should sleep 10-12 hours and 13+ should have 8-10 hours sleep
1000inches
An average of 8 hours sleep per night is a reasonable amount of sleep.
The average amount of sleep a 10 year old should have is around 8-11 hours
i have a 12 year old daughter that is going into 7th grade and her bedtime is 11:00 she wakes up at 7:00 and she still gets the right amount of hours of sleep she needs.
A 33 year old needs anywhere from 7 to 8+ hours of sleep.
Believe the older you get ,the less sleep you need.
The average sleep time of a 4 year old is about 5-8 hours. Or about 5-8 minutes.
There is no magic numbers, sleep differs for each person. But as a good rule of thumb: an average adult needs between 7.5 and 8 hours of sleep per night. But many people can function with 6 hours' sleep, and there also some who need 9 hours or more. The amount of sleep needed to function the next day varies from individual to individual, and is determined genetically and hereditarily.
Short answers: 10-12 hours. All children are different. On the weekends how long does your child sleep without an alarm clock? If they sleep for 11 hours without an alarm clock, then that is how much sleep they need everyday. I believe the recommended amount of sleep for children is between 10 to 12 hours. This means that if school starts at 9 AM and they have to be up at 8 AM to get ready, they have to be assleep at 8 PM, which means they have to get ready for bed at 7:30 pm. Strict bed times are a must for children to succeed in school.
A nine-year-old should have about 9-11 hours sleep each night.