^Butt loads of steroids, hgh, insulin and God knows what
Also favourable genetics and pig out food.
Don't forget the mystical gut.
Realistically, not everyone is a professional bodybuilder. I sure as hell would love to throw away my job and be able to train/eat for only one purpose, however that's not realistic. The best gains/results I had was two years ago when I was on sick leave for 3 months and the wifey was with her mother abroad. I had all the time to myself and was able to purely focus on lifting and eating, gained 34lbs and leaned out.
Ronnie abused the hell out of himself to be where he's at. That's the reality.
We seem to hold everyone up to the standard of professional bodybuilders. I've seen a few other similar threads where people are being bashed even though they did achieve results but 'not good enough' or "pshht.. I could achieve that in TWO DAYS".
Bold claims and a lot of hate.