You know, I have never thought about that. I also would often drink upwards of a dozen pints of beer in a night. The same equivelant of hard liquor was barely a mouthful, so I only ever thought in terms of the alcohol and the damage that it was doing to me. But reflecting on my consumption when I was mainly drinking beer, I don't know how my kidneys didn't blow out from the volume of liquid. I still drink a large volume of water and seltzer, but if I tried to drink 12 pints of water in a few hours, I might explode.