I read an account from this dude Monte Cox who managed a lot of fighters from Pat Miletich's gym back in the day, and was responsible for putting them on UFC shows that came through that area and also managed Pulver when he was champ. Apparently, just a few weeks prior to his rematch with Carlos Newton, Monte calls up Hughes and asks him what he's doing, and Matt's like, "I'm helping my brother put a roof on his barn". And Cox is like, "Matt, I'm pretty sure that Carlos Newton is in training and not fucking roofing right now". And Hughes just showed up to fight Newton after barely training a couple of weeks, not really in good shape, and still dominated him and finished him in the fourth round.
One wonders what he could have done with more commitment to training indeed.
Also, Pat Miletich reported that the first day he grappled with Hughes, he put him in close to 40 submissions, and couldn't finish any of them because Hughes was so goddamn strong and bullish. And Pat went straight-up, "what fucking steroids are you taking?" And Hughes was like, "that's an insult, I've never done steroids in my life". I'd be inclined to believe him too, dude had that farm strength from a lifetime of working.