This must be difficult to determine. I can get by great on 4 - 6 hours of sleep and wake up without an alarm. During the day, I'll have a bit of a post-lunch slump at the office, but I don't seem to get it at home. If I take a step back from work and friends (shared routines) then I settle into an 8 hour sleep schedule. I feel the longer sleep schedule is better for me, but I can do either. I wonder how many other people are in the same situation?
