EXACTLY six hours for me.
I quite the strange one, no matter what time I sleep I will wake up
EXACTLY six hours later (plus/minus 5min or so). Depending on what
time I start work the next day, I'll sleep such that I get my
requisite 6 hours.
4 hours is emergency sleep. I can go on 4 hours for 2 days, after
that I'm zombified. However, when I was in uni, I went 4 hours
almost every day...
If I'm really lazy, I'll go to 8 hours... And that's on weekends so
that I can charge my batteries up for the week ahead.
