Dorian built his size using the two on, one off, two on split. Like all bbers of the late 80's and early 90's.
And he was NOT the first 300lb freak. That would Lou Ferrigno when made his come back in 91 and was 310lbs.
Edit, I forgot to mention that Dorian changed it up after a few years and went from two on, one off, two on, two off, to eod. Upperbody one day, legs arms the next, cycled nonstop.
You'd be surprised how these pro's really train, how they take their gh, slin, what they really eat, and all their other little secrets. All the shit you see in their videos and books is mostly lies. It's all set up to keep selling mags and videos. You can't blame them as it's tough to make a buck in this sport.
Try becoming close to a few of these guys and you'll be amazed at the shit you hear. And no, it's nothing like what you read in Flex, MD or see in their training vids.