How could Michael Phelps possibly eat this much in one sitting?

Supposedly for breakfast he eats "Three sandwiches of fried eggs, cheese, lettuce, tomato, fried onions and mayonnaise, add one omelet, a bowl of grits, and three slices of french toast with powdered sugar, then wash down with three chocolate chip pancakes."

Physically, where does all that food go? Does his stomach become distended?

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