verb (used with or without object), bifurcated, bifurcating. 1. to divide or fork into two branches. adjective. 2. divided into two branches.
Advertisement. By the Numbers. According to the National Sleep Foundation, newborns should sleep 12 to 18 hours out of every 24 (every new parent hopes), with a gradual reduction to 12 to 14 hours for toddlers ages 1 to 3; 11 to 13 hours for preschoolers 3 to 5; and (yes!) 10 to 11 hours for schoolchildren ages 5 to 10.
Most kids' sleep requirements fall within a predictable range of hours based on their age, but each child is a unique individual with distinct sleep needs. Children ages 10 to 12 need a little over 9 hours of shuteye a night.But it's up to parents to judge the exact amount of rest their children need and see that they're in bed in time for sufficient sleep. get 9 hours of sleep. If you go to bed at 9pm when your 11 or 12 then your most likely to wake up at least around the time of 6 am or 7 am.