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.
The National Sleep Foundation recommends that school-age children get from 9 to 11 hours of sleep each night. Most kids this age do get the recommended amount of sleep, Melendres said. It's during this period that some kids may develop nighttime fears, such as a fear of the dark, Melendres said.