[alnorth]

In case anyone is wondering what the point is for substances banned only in-competition, its generally for things that no one believes will improve your long-term ability to compete, but could possibly improve your ability to compete later that day or tomorrow. The things banned only in-competition are (in each case there's a list of chemical agents they test for): stimulants, narcotics, cannabinoids, and glucocorticoids.

If you are caught with one of those substances, it only matters under WADA if it was in-competition. For stimulants, caffeine and nicotine are permitted, probably because I guess they decided they don't want the publicity of stripping an olympic medal from someone for drinking coffee or smoking cigarettes.