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.
I have four kids â and I catch a lot of flack for their bedtimes, she posted. I started out setting their bedtime years ago based on how much sleep they need ... Glad to see this chart justify the exact times we have already set!. Doctors recommend that children ages 3 to 6 need about 10-12 hours of sleep each day. And 7- to 12-year-olds do best with 10 or 11 hours.