I've been told that if you aren't going to get more than three hours of sleep in a night, you ought to just forego sleep altogether. I found myself in that position last night, and decided to just stay up until I had to be at church at 8:00. What they don't tell you, though, is that you need to find something to do for those three hours. One can only sit in front of a jigsaw puzzle for so long, especially in a sleep-deprived state. Somehow, I managed to entertain myself through the night, but I found another fatal flaw in the advice "they" had given me. Not sleeping at all during the night makes you immensely tired. It doesn't matter that you would perhaps be even more tired had you slept for a few hours - you're still dead to the world. I was falling asleep without even realizing it.
Friends, be kind to your bodies. If they're telling you that you ought to fall asleep, listen to them.
More to come in the days ahead. I've been busy enjoying my tiny vacation between winter and spring terms.