I'm sad/worried because I passed out and stopped breathing while in the shower this morning. I hadn't even noticed it had happened, until I felt an intense pain in my tongue from lack of oxygen, followed by the rest of my body. The pain helped me come to, and I started breathing again, and got out of the shower as quick as my dizzy body could handle. Thank the gods for the autonomic nervous system!
Try looking up vasovagal disorders--they're a reasonable bet, if you haven't been starving yourself recently (or similar). Rosewood and his father had trouble with them, too.
Disclaimer: no medical degree.
I just realized that my favorite things to do at the moment (in no particular order) are:
1. Cooking
2. Playing Civ IV
3. Defining functions for specific purposes
4. Taking intersections of sets
5. Analyzing literature, particularly when it reminds me of group theory.
To be sure, I'm really glad I have all this free time to waste on things like (1), (2), and (5), but I hadn't realized I was still such a math nerd. On the other hand, I guess my skill is returning if I'm getting too pissy to prove the machinery I built does what I promised.
I've also realized that 20-year-olds (myself included) are generally twerps. This makes me sad, because pretty soon I'm going to return to school and be surrounded by them again.