newborns - 14-17 hours, Infants - 12-16 hours, Toddlers - 11-14 hours, Preschoolers - 10-13 hours, School age children - 9-12 hours, Teenagers - 8-10 hours, Adults - 7-9 hours, Sleep deprived - Inadequate sleep, Sleep deficit - Regularly inadequate sleep, Short Sleepers - Need 4-6 hours of sleep,

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