water, a lot of it before going to bed. Also try not to mix alcohols, for example, if you're going to drink beer, don't change over to gin. If you drink hard liquor, clearer liquor is less likley to make you feel like shit the next day. Wine is also well known for it's hangover qualities because of sulfites contained in wine. Also Alka Seltzer has a new hangover product that I've seen ads for. don't know if it works.
Some of you are saying, Nature Boy, "where did you learn all this information from?" And I'd say, "sonny, I learned it from Maxim". And then you'd say "Nature Boy, you're the best!" And I'd say, "Yes. Yes I am."