It varies from person to person and with lifestyle. Humans should get a little over 8 hours of sleep, but many don't.average normal is: about 8 to 9hrs..
10
Generally 8 hours of sleep for an adult. 9-10 for a teenager and 10-12 for a child.
You should never sleep with an eletric blanket.
Most elderly adults should aim for 7-9 hours of sleep per night. However, individual sleep needs can vary, so it's important to pay attention to how rested the person feels during the day to determine if they are getting enough sleep. Additionally, naps during the day can help supplement nightly sleep if needed.
Sleep TimeRecommended sleep time is eight hours a night, but some sleep more and some less.
10 days.
If the pain of sleeping on it is tolerable then it should be ok to sleep on it.
Kids
5 hours a day
Get a night light, sleep with the lights on, or grow up.
the recommended number of hours a person should sleep is at least 6-8 hrs a day.