The quick update: finished comp exam at 5:00 PM as I was supposed to, then went on an hourlong bike ride. I'd been munching on food all day, a sort of nervous distraction while typing, and wanted to do something physical instead of mental, as well as burning calories. I bonked halfway through, and the ride was slow (simple sugars can get burned off quickly), then just cruised comfortably the rest of the way. Went out wiht some friends, and now, to bed, more tired than I've been in a really long time.
Interesting replies to this thread. I'll come back later.