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.
Some babies need up to two hours more or less sleep than other babies, and some toddlers and older children need as much as an hour more or less than their peers. This timeline gives you a general idea of how much sleep children typically need at various ages and how sleep and nap patterns change as they grow. 11 to 14 hours. Most 2-year-olds still nap in the afternoon and sleep around 10 to 12 hours at night.