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.
1 Set bedtime so that your child gets his or her usual amount of sleep â the typical 9 to 11 hours per night depending on your child's age. ( 2 Children between the ages of 6 and 12 need about 10 to 11 hours of sleep each night; teens need about 9 hours of sleep each night.).