I always thought he was natural.
I still think he had the most perfect physique/ proportions of any weightlifter.
And I think he did it with a 29 inch waist.
He worked out with Schwarzenegger as well.
Did you ever meet him?
Yes, I first met Arnold in 1975 when he came to town for an exhibition.
For the users on here, this is a pretty accurate depiction of a man that I was fortunate enough to train with in the mid-late 70s.
https://apnews.com/bbe41a33553ae4be5d769e5478e254c9