There was once where I was going to school full time, working an overnight job, and also had my gigs and such on weekends... Went for about a month with about 10 hours of sleep a week. Then one day, woke up in ER.... lol, fainted at work apparently. It sucked... They always said I was a hard worker though. I guess I truly can say, "I've fallen asleep on the job"! HAHA.