6-8 hours, depending on your body, unless people who say they're fine on 6 hours are just lying to themselves and others. From what I've experienced, I think t

6-8 hours, depending on your body, unless people who say they're fine on 6 hours are just lying to themselves and others. From what I've experienced, I think the time of day you go to bed matters as well, meaning even with a full fresh perfect feeling 8 hours, your body doesn't enter REM the same or produce the same amount of growth hormone or clean out the brain properly if you go to sleep everyday at say 6am vs sometime shortly after sun down. I guess it has to do with the light levels you experience.