But the 55-year-old former Mr. Olympia admitted that he had to get back into shape to play himself as he appeared more than a decade ago. "The only thing I ever do is, you know, get going with my training again, because one of the things that you can't hide is when you arrive from the future to the present, ... you arrive naked," he said.

"So you have to have the same body as you had in the first movie or the second movie, because otherwise you're not the same mold or the same kind of a robot. So the pressure is on. And [director] Jonathan [Mostow] said, 'I think you'd better gain some weight.' And I look a little slender today, you know? All this pressure [was] put on me. So I started going with the heavy workout again for the last six months. ... I love it. Whenever you have a reason for it, and you say, 'This day we're going to shoot this scene. For this week we're going to shoot these scenes.' In the middle of June or whatever it is. And [it's like] the Mr. Olympia competition is that day, and I'm going to train for that day, so that's what you do. You go on a diet again, and you eat more, and you train more. Instead of training at home, I ended up training in the gym much more, you know, with the guys again. And it was fun...

I'm very fortunate on the set I get enough time to train during lunchtime, because it's very important for me to train twice a day when I train heavier and harder. So we have an hour during lunch, which I take for working out. They have an exercise trailer on the set, where I have a chance to work out."

Terminator 3, which also stars Nick Stahl, Kristanna Loken and Claire Danes, is currently shooting in and around Los Angeles, with an eye to a July 2, 2003, release.

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