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.
Babies need between 12 and 16 hours of sleep each day depending on their age. But where they sleep is even more important than how much they sleepâand a new study set to be published in The Journal of Pediatrics found that sitting devices like car seats, swings, and bouncers can lead to injury and even death if babies are allowed to sleep in them.