nine
Minimum 6 hours sleep in a day is good for nine year old girl's health.
Children and Preteens need atleast 8 hours of sleep each night. That adds up to 56 hours of sleep a week!10 or 11 is the ideal amount, adults should get at least 8 for a healthy body. sleep deprivation can harm you in many ways. (:
nine to ten hours of sleep, due to puberty and raging hormones.
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
A nine year should be getting 9-12 hours of sleep.
At least nine hours per night, and nine and a half is reasonable, as well.
Eight or nine hours each night.
People in the 1900s slept an average of nine hours a night. In the 1970s the average amount of sleep was down to seven hours.
nine hours at the least
someone who is 11 years of age should get 9.6 hours of sleep every night to stay healthy to prepare for becoming a teen nine to ten hours
While sleep requirements vary slightly from person to person, most healthy adults need seven to nine hours of sleep per night to function at their best. Children and teens need even more. And despite the notion that our sleep needs decrease with age, most older people still need at least seven hours of sleep.