Jackman is apparently on a 6000 calorie a day diet that was recommended to him by Dwayne "The Rock" Johnson.
"Basically it's steak or chicken, broccoli and cauliflower, and sometimes rice but only up until lunch time," he explained. "That's it eight times per day. It's like a job in itself."
Jackman and Darren Aronofsky have both previously stated that Hugh will be getting more ripped for this film then he previously did in the other 'X-Men' films in order to look more like the Wolverine in the comics, and judging by this picture, he's certainly accomplished that.
"Darren said with the last one, ‘Hey you looked great, but you’re so tall that in those long shots you looked kind of like Clint Eastwood, and that’s not Wolverine,'" explains Jackman. "He said that Wolverine, in the comics, is powerful, stocky, you know, he’s short and thick. So he said, ‘I want you to go there, get bigger.’"
It's been stated that the last time Jackman portrayed Wolverine that he weighed in at 190lbs.
“Right now, I’m at 210,” Jackman says of his current weight, the result of an intense diet and workout regime. “It’s 6,000 calories a day. It’s rough.”