About 5mins breathing pressurised 100% Oxygen.

Used to do it almost daily when I was working on the dive boats. It's the best hangover cure. Blows away a hangover in 20mins. There are obvious downsides though. One being that not everyone has a bottle of oxygen kicking around and secondly, if you're on a dive boat, it's not really the smartest move to use up the pure oxygen on a hangover cure when it's really there in case someone gets decompression sickness, or the bends as it's otherwise known. But hey, we've all done some dumb s**t in the past.

Posted By: I Am Hoot, Dec 19, 11:04:00