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How did Ashley Greene get fit for "New Moon"?

"It was really easy," the actress, 22, told Usmagazine.com Saturday at a "New Moon" promotional event in Naperville, Ill. "We were working 12 hours a day, so it didn't leave too much time to eat."

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After her response, her publicist nudged her, but Greene didn't seem to care about her blunt answer.

When she did eat, she chose "really healthy stuff, which was nice."

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Greene also said that training extensively for the sequel, which had the third biggest box office opening of all time, accounted for her figure in the movie.

"We had a personal trainer and then we also had fight training," she told Us. "It was a good four hours a day of training."

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To stay in shape these days, she said she does Pilates, usually six days a week.

"I do it early in the morning. It wakes you up, and it's kind of refreshing," said Greene, who is headed to London in a few months to begin filming the thriller "The Apparition." "And that is basically it. Sometimes cardio. I am not a big weight person because when I do weights I build muscle mass."

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