8-8.5 hrs almost every night and really need it. It is OK to have some 5-6 here and there, doesn't throw me of too much.
Josh, you are an animal!! My step father was, and still is, a champion body builder/ weight lifter. Until he retired he only slept 4 hrs a day for as long as I've known him. He is like 70 now and still competes all over the world and is in very good health, so I don't think it hurt him too much.