I finally figured out that when I was in my 20's and going out drinking all night all the time, that my "hangovers" weren't really all hangover.
Now, even if I drink nothing, if I'm in a smokey room, I have a hangover the next day. I now realize it was more the lack of sleep and cigarette smoke that made me feel so horrible the next day!!
But Illinois is now smoke free everywhere (sorry for the smokers but) - YEAH!!