According to the Academy of Pediatrics, eight hours of rest a night will suffice.
nine to ten hours of sleep, due to puberty and raging hormones.
The average 7th grader should get atleast 8-9 hours of sleep. No lower than that.
Lions sleep more on their side then on their backs.
About 8 to 10 hours.
Teenagers need about 8-10 hours of sleep per night to maintain their health and well-being.
The average adult should be getting 7 to 8 hours sleep regularly for good health.
Ages 13-18 need about 8 to 10 hours of sleep. Adults between 25 and 64 years of age need an average of 7 to 9 hours of sleep per night. Adults 65 and older need 7 to 8 hours per night.
The average person should be getting around 8 hours of sleep but teenager's sometime's need more. I would sudgest a steady 9 hours of sleep.
My doctor has told me that tweens need 9 hours of sleep a night! A Sleep Doctor should tell you to sleep 10 hours of sleep not 9 hours. Now Adult can sleep up to 6 hours, there bodys don't need that much sleep:)
at least 8 hours of sleep
Lizards needs 11hrs of sleep
an adult need sleep of maximum 8 hours.