ya but water poisoning or "toxicity" is a long term affect from drinking gallons of water of the course of a day or so and not urinating. i still only have seen 3 people to this day drink a gallon of milk in an hour. my point was just that you won't die from it. and if your puking every time you try it your not even close to absorbing enough to get Hyponatremia. I have another challenge called the 4 - 4 - 40. its where you drink 4 quarts of water in 4 minutes and have to hold it down for 40 seconds. only got 3 quarts down before i turned into a geyser.