Question: how many hours of sleep do you need at 19?
Answer: School-aged children (6 to 13 years): 9 to 11 hours of sleep. Teenagers (14 to 17 years): 8 to 10 hours of sleep. Young adults (18 to 25 years): 7 to 9 hours of sleep. Adults (26 to 64 years): 7 to 9 hours of sleep.