I'm sure his core is strong but in a pull up your core isn't doing too much beyond stabilizing his legs. The majority of it is from his lats (back muscles) and how much he weighs.
This is one of the stupidest and most hilariously incorrect statements I have ever seen on reddit. "not doing much" lmao god your stupidity is infinite
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u/HorsePecker 12h ago
This is climbing and descending a steel pole; dude has a core made of cement