Wonder why he can't duplicate that conditioning
Hard to say, I'm no expert, but age?? The amount of drugs/Gh insulin, high dosages ingested over the years took a toll on the body? Same with a lot of pros before they were pros, looked thier best when amat. and when they turned pro, upped everything and played the size game and completely fucked up thier physique.
Johnnie had a very good physique that had the potential to do a lot of damage on the pro stage.