Originally Posted by soccerchamp76

There are actually two components of a hangover:

Dehydration and impurities.
The dehydration hangovers usually happen when you drink beer. In those cases, drinking a Gatorade before bed (if possible also a multivitamin) will help immensely.

However, if you drink red wine and get drunk, a nasty hangover will probably ensue. Same for darker liquors. This is the impurities that are in the liquor. No avoiding that (except more expensive liquors).