Angelina Jolie had to be in tip-top shape for her role as a kick-ass CIA agent on the run in the new action thriller Salt, opening today. So what did the stunning A-lister do to prepare for the demanding part? She ate about five small meals a day and stuck to a diet of 70% carbs and 30% protein--and actually avoided cardio--to help "put muscle on without losing weight," says trainer Simon Crane, who worked with the actress to get in top form for the film. On the hit list: No junk food, and alcohol only on weekends.