If you wake up still tired you may have a sleeping disorder. It is a common disorder and you shouldn't feel worried about it. If you don't feel tired when you wake up you were just really tired. If you have any more questions ask me on my bio page.
They can sleep for a couple of hours in the day and 12 hours at night.
12 hours a day, 8 hours a night.
About 12 hours well, that's how much you should get
A 12 year old should have 8 to 9 hours of sleep each night. Sleeping to little or to much is unhealthy, especially when you are maturing.
They should usually have around 9 to 9 + a half hours sleep per night.
at age 76 you should be getting between 10 and 12 hours of sleep each night
No, six hours of sleep is not enough, especially teens. Most people should get from eight to ten hours of sleep each night.
The duration of Night Without Sleep is 1.28 hours.
i think that astronauts usually get about six hours of sleep every night when they are in space.
Generally 8 hours of sleep for an adult. 9-10 for a teenager and 10-12 for a child.
4 hours
As far as I know, I am pretty sure that pre teens and teens need about 10-12 hours every night.