37 I've heard that you can borrow from sleep, but eventually you will need to pay it back. I function best on 8. If I get 6, then I will sleep two 9's to make up for it. I enjoy sleeping and will sleep over on the weekends, because I like to feel relaxed and comfortable. My wife on the other hand sleeps on average of 6.5 hours and seems to be ok.
You sound like my best friend who works as a scalemaster (I think that is what the job is called) at Stolt.
Went to bed at 4am. Was up reading Isabel's blog. Got up at 9am and then slept another couple hours at noon.