In this thread over here, the capacity of the human stomach for liquids and solids is discussed. The thread inevitably turned to that infamous challenge of drinking a gallon of milk in half an hour and holding it down for an hour, or some similar feat.
I related in the thread how I saw a guy drink a gallon of milk in about one minute and then walk off to bed. This guy was highly trained in the sense that he had drunk about a case of beer a night for many years. When he drank the milk, his stomach visibly expanded in a way I have never seen before or since.
So, why aren’t there competitive drinking contests along with the competitive eating contests that so disgustingly litter basic cable? Maybe they exist and I’ve just never seen one. Google didn’t turn up much.