I still have no idea what the optimal sleep amount is for me. I feel like it's pretty high, as I can function on 6 or 7 hours but I feel tired. However there have been many days where I've gotten 10 and still felt tired, so I think there's too many extraneous factors, i.e. what I ate, how active I was the day before, if I'm fighting off a cold, if I drank booze, if I busted several nuts into some random hottie, etc.
"i think my lowest moment was jacking it to a girl I drew on MS paint." --Prime Yossarian