Tyson Fury tells The Sun that when he looked at himself on TV a few fights back, he didn't like his conditioning, and since then has looked to keep himself in better shape:
"I looked like a fat pig. Against John McDermott, I was more than 19st — not the sort of condition a top-level athlete should be in. It was never the training with me. I'd put everything and more into gym work and sparring. It's been the food — plenty of junk. ... The main thing I've been cutting out is fizzy drinks. I'm just drinking up to five litres of water a day, eating lots of fruit and veg and it has made a hell of a difference."
There's definitely been a change in Fury's conditioning, and it's visible. For the McDermott fight, he was 270 pounds on the scales. For his July win over Dereck Chisora, which netted Fury the British and Commonwealth heavyweight titles, he was at 255½, which on his 6'9" frame isn't too big.
I guess you could say he could still use some toning up, though -- he's not exactly a Klitschko in terms of his muscle mass, as he's actually kind of lean for such a big guy. But some fighters don't carry a lot of muscle well, and Fury just might be one of those.
Fury fights next on September 17 against American club fighter Nicolai Firtha.