A concept has bothered me since the start of medschool. In the hours leading up to a big test, it seems like I have to pee 10X as much as usual. This is perplexing to me because I expect that my sympathetic system is cranking like crazy, and isn't the SANS supposed to quell the urge to urinate and defecate? Instead, I have the exact opposite urges. I cannot make sense of this phenomenon. If someone can shed some light on this, I'd love to hear an explanation.