I would say Arnold is the only bodybuilder who truly had 23'' arms, everyone else had at the most 22'' or less
Sergio had big arms.
Arnold was heavily on steroids
Kent Keuhn muscle worshiping the Oak.
He looks sick there….
How many times did Joe blow a load onto the Oaks upper pecs?
Not unlike his competition. He got the perfect genetics and incredible stamina and recovery ability to get away never ending volume workouts. I believe growing in high altitude geography had positive effect on his lung capacity.