The human body is amazingly adaptive though. My old roommates friend would come over frequently and every time he would get a cup from the kitchen, fill it 1/3r

The human body is amazingly adaptive though. My old roommates friend would come over frequently and every time he would get a cup from the kitchen, fill it 1/3rd with water, add one of those flavoring crystal packets, and then fill the rest with vodka out of a plastic bottle. No one else would even be drinking. He would drink 2-3 of those cups and seem pretty much unfazed, eat nothing, and go home hours later. I am sure it caught up to him eventually but at the time it was always flooring that his body had adapted to that kind of diet.