Celebrity trainer Michael George sculpts some of the best bodies in the movie business. He knows how to help an actress shape up for a role in as little as four weeks. Even better, he knows how to help her stay slim and sexy when the cameras aren't rolling. Here are some of his secrets:

1. To get an actress camera-ready in a short amount of time, George gets down to business! His prescription, "a strict diet, five days of weight work per week and six days of cardio."

2. George's diet philosophy: "For weight management, follow a structured nutritional plan that provides for five small meals per day versus two or three large meals per day. Fuel your body efficiently by eating small meals every two to three hours. This will allow your metabolism to operate at an optimal level."

3. George trains his clients using a technique he calls Intergrated Motivational Fitness. He created this concept to prevent the boredom that often leads people to drop out. To keep it interesting, he suggests doing a different cardio activity every day of the week: "On Monday, you could take a step or low-impact aerobic class, a great way to gain balance and agility skills. Tuesday you could find yourself working the machines -- 15 minutes on the treadmill, 15 minutes on the StairMaster, 15 minutes on the bicycle. Wednesday is your new activity day -- try aerobic boxing, a great way to burn calories and build strength at the same time. Thursday you participate in a sports league or pick-up game, such as basketball or volleyball. Friday it's taking a swim, a low-impact high-calorie burning work-out that refreshes as it works. Saturday you take that Power Yoga course, burning calories, gaining flexibility, and giving your mind a chance to quiet down. Sunday you take it outside. Go mountain biking, hiking or walking with the family."