I have no idea how you guys can do it. I go to bed at 7pm every night so I can be up at 3am. (work is at 4am.) Anything less than seven hours of sleep and I am dead.

Anything more than nine hours of sleep leaves me dead, too. I don't get it. I cannot sleep in because it wrecks me.

So yeah, 7-8 hours. It's wonderful. I can't remember the last time I felt sleepy aside from at night.