I don't know how much i need tbh.
I am never tired at night time, i usually get tired at like half2 in the morning =/.
But like when i'm off school or at weekends i usually get about 9-12 hour.
If it's a school night i get about 5-8.
I don't have a clue how much I need, because I'm always tired, regardless of how much sleep I get. I go out of my way to get 8 hours a night though, because frankly, I enjoy sleeping. The only time I don't get my 8 hours is if I'm out at a concert or something.
I need much more sleep than i get. Im always tired. Usually I sleep like 6 hours, or a bit more. But yesterday slept only 2 hours... Have some problems and just cant sleep properly. Over the last month i must wait till sleep every day at least 2 hours, or even more...