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.
According to the National Sleep Foundation, by age two, most children have spent more time asleep than awake. Of course, the tricky part is getting your child to bed - and getting him to stay there. Toddlers (aged one to three years) need about 12 to 14 hours of sleep a night.