The third display depicts the drug arrest rate for the 34-year period from 1965. to 1998. The display also focuses on the last 20 years to show the components of the larger. trend (sale vs. possession, marijuana vs. cocaine/crack and heroin). The trends shown here.
Infants and Children. According to the Mayo Clinic, infants often sleep for up to 16 hours each day. Preschoolers should get about 11 hours of sleep each night, and children under the age of 13 should get about 10 hours of sleep a night. Teenagers should get nine hours of sleep a night. Kids Health from Nemours notes that getting enough sleep is critical for children because lack of sleep may affect their growth rate.
Keep in mind that it takes approximately 15 minutes to fall asleep when scheduling your sleep. How Much Sleep do you need? Rest and renewal only comes during the REM stages, the more rest you need translates in to needing more time spent in the REM stages of sleep.