The celebrated actor lost 60 lbs. for his recent role in The Gambler – shrinking down to a mere 137 lbs. and looking nearly unrecognizable in photos – but he is bulking up again and nearly back to his comfortable weight.
"It's a lot easier to put it on than it is to lose it," he told PEOPLE Monday at CinemaCon in Las Vegas while promoting Transformers: Age of Extinction. "It's just part of the job. I make sure I take all the right steps, take all the right nutrition, all the right exercise, being monitored by doctors. I'm trying to do it in the safest way possible."
Pedro Andrade / Pacific Coast News
"I want a little bit more," he said. "I like to walk around at 190 … I like to eat though."
Aside from a comfortable weight, the father of four said one of the reasons he took on the Transformers project is for his children.
"I haven't really done anything that was kid friendly." he said. "That’s not the only reason. I don't make decisions that way. It was really the best of both worlds, because it was something they'd be interested in and something I hadn't done before."