During school and primary training, I functioned well on 5 hours a night. 6 or 7 was a nice treat.
During advanced and formal training, I began getting 8 hours a night. I functioned just as well, but my body got used to getting 8 a night, so if some night I went back to my old 5 or 6, I felt awful the next day.
I have figured out that I will be unable to fall asleep until I have been awake twice as long as I slept the night before. So any sleep in excess of 8 hours puts me dangerously close to throwing my sleep cycle out of phase. I try to limit it to just over 7 hours so that I have a lot of flexibility, since my schedule can vary tremendously (I might need to show at 0500 on Monday and Tuesday, then show at noon Wednesday and Thursday, then at 0800 on Friday). All workdays are 12 hours for me regardless of showtime.
According to the Army, the human body can survive indefinitely on 3 hours a night, assuming it is otherwise well fed and hydrated. That's just the body; the brain will necessarily deteriorate if subjected to these conditions. But according to the Air Force, I need 12 hours of rest including 8 uninterrupted hours of opportunity for sleep, if I am to be permitted to fly the next day.
Sleep. Man, what a tricky proposition. Takes careful planning for to have an effective week.
Last edited by Avenger on 06 Jan 2008, 11:01 am, edited 1 time in total.