The average sleep time is 8 hours, but everyone is different some people need seven some need 12. You can find out how many hours you need by testing different amounts of sleep and your ability to function normally.
uhh, for your information, you should go to the nine year old girl and ask her " how much do you need to sleep" I think tht will help . wow, you have to think, well how much do YOU need to sleep. & then come to a nine year old girl. cuz duh EVERYONE needs to sleep for like 8 till 9 hours. THINK NEXT TIME !! sholoon khara
from 8 to 11 hours for additional information go to: beinggirl.com
Minimum 6 hours sleep in a day is good for nine year old girl's health.
According to Dr. Richard Ferber in his book "Solve Your Child's Sleep Problems," an 8-year-old requires between 9.75-10.75 hours of nighttime sleep.
I am a 12 year old girl, and my mom says 10-12 hours. I normally need about that much, and I feel awake the rest of the day. Hope this helps!
Well the answeris 10-12 hours each day because you need to have fun at night but still get sleep.
Eight hours.
How much sleep does a 11 year old need of sleep Optimally, 8-10 hours is what you should be looking at around 11 years of age.
Since you are still growing, a 12 year old girl should get 9-10 hours of sleep a night.
Around 8-9 hours sleep a night is best. As teenagers need enough sleep to get all there energy back
alot
8 hours