There could be a way though.Look at the size of his jaw and hes bald.Ive seen pics of him from high school playing basketball and he looked jacked like a bodybuilder.
It could be possible that a person is born with massive amounts of anabolic hormones flowing thru his body naturally.Thats why we have nerds and then the stocky types.I had a friend in school that in the 7th grade had hands and feet the size of a man 6ft 5 and he was about 5ft6.To this day ive never seen hands that big!!His fingers were as thick as two of mine and I have pretty large hands.Deep deep voice too at that early age.I mention him because of a study
I read where they injected rats during their puberty with tons of testosterone and the rats grew enormous hands,feet and genitals
But

I agree I dont think hes totallty natural.