text: is 6-hours sleep okay? how long do you sleep? 6 hours is fine if you still feel good during your waking hours and your brain is working the way it should. but if you feel tired and don't have the energy you should have at your age or you are having memory problems then you may need to get at least two more hours of sleep. either take a two hour nap or add two hours at night.  i sleep 7-8 hours now...thank the lord!