At 3:11 this morning I was wide awake, and hungry. So much so that I just got up and ate a bowl of cereal and read some. Then, at about four, still quite awake, I decided that if I didn't get to bed before daylight, I wouldn't get to bed, and that maybe 4 hours wasn't quite enough sleep. So I went back to sleep, and woke up again exactly 4 hours later. I've had this happen to me before. Back in college I went through a phase (almost a year) where I could only sleep 4 hours at a time. So I slept... read more