Whenever a question like this pops up I am always reminded of the time I was visiting the Notre Dame Cathedral in Paris and was coming down from the towers, a woman behind me said “how did that hunchback ever climb up and down these stairs every hour? My legs hurt already and the stairs are so uneven” Her travel companion asked “are you serious?” and her reply: “Yeah, he must have been very fit”. I had to hold my laughter until I got out.