BEVERLY HILLS: To play the Greek hero Achilles in ‘Troy’, the most physically demanding film of his career, Brad Pitt gave up something he loved: smoking. “This guy’s supposed to be the greatest warrior of all time; I had to get my (butt) in shape,” Pitt tells Vanity Fair magazine for its June issue. “I changed my life completely. I quit smoking and let me tell you, I was a professional smoker and I still miss it.... “But I wanted to see how far I could go with my body,” he adds. “By the time the movie was over, I’d been on this diet and workout plan for a year.” —AP