Jessica Simpson... John Mayer... Alicia Keys... Eva Mendes? Kanye West... Sophia Bush... Mandy Moore... It's not the celebrity guest list for an upcoming awards show, but it is the clientele roster for one of Hollywood's hottest personal trainers. Fitness guru Harley Pasternak is a lean, mean, fat-fighting machine who boasts more than 40 big-name celebrity clients.

Now, he's sharing the ins and outs of their customized diet and fitness programs in a hot new guide to a great body that can work for anyone and everyone...

Handsome hunk Harley Pasternak looks like a celebrity... and he is. But not the kind you think. While you won't catch Harley in a movie, on a television show or behind a microphone, he actually plays leading man to some of the most famous actors, actresses, singers and rappers. He's their go-to guy when it comes to getting in shape. Harley's role as personal trainer is instrumental for these individuals whose bottom size can actually affect their bottom line.

While it's easy to assume that many celebrities are catered to by personal chefs and round-the-clock fitness coaches, that's not really the case. Just like the rest of us, they have to cook their own meals and perform their own workouts. Now, Harley's sharing their super formula for fitness success in 5 Factor Diet (December 2006, Meredith Books), the phenomenal follow-up to his bestselling 5 Factor Fitness (December 2005, Putnam).

Harley's common-sense approach is both practical and simple, based on five as the magic number. Five meals a day... 5 components to each meal... 5-minute meal preparations... 5 ingredients... 5 short workouts a week... It's the power of 5, and according to Harley, it's helped transform the lives of thousands of individuals from super-busy celebrities to harried housewives.

Try Hollywood's Hottest Weight-Loss Plan

"All kinds of people use the 5 Factor Diet," he says. "I have the largest celebrity client roster in the world - - Eva Mendes, Alicia Keys, Kanye West, Mandy Moore. They're very busy people. They need something as efficient as possible, much like someone who has a family, a job and responsibilities. This is for the person who doesn't have a lot of time. It gives results, and that's important."

"Even Marge in Wisconsin with three kids working a job can use it. This is for someone limited in time, frustrated and fed up with other fad diets. 5 Factor Diet is the last diet you'll ever use."

There's nothing random about the number five. Research shows that consuming five to six meals a day helps stabilize blood sugar. Harley used the findings to set up a balanced eating regimen of breakfast, lunch, dinner, mid-morning snack and mid-afternoon snack. He then wrote down the five main components that should comprise every meal: low-fat protein, low to moderate GI carbohydrate, fiber, healthy fats and sugar-free beverages. His healthy eating equation includes mouth-watering meals that are sure to satisfy even the most finicky eater.

"Eva Mendes loves the 5 Factor French toast and pizza," says Harley. "John Mayer is going smoothie crazy and has made some great soup. Entertainers are no different than someone who's a dental hygienist in Tennessee. What they have in common is that they have a limited amount of time to commit to exercise and eating, probably. They all want results, and in that way, they're very similar."

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And who says cheaters never prosper? You'll feast on spaghetti, lasagna and pizza, eating five times a day. The program also allows for one cheat day a week where you can eat whatever you like outside of the program. Below are five of Harley's greatest meal hits.

Berry Protein Shakes
2 cups nonfat milk
1 1/2 cups raspberries
1 cup strawberries
1/2 scoop protein powder (100 percent whey)
1 tsp. vanilla extract
Crushed ice

Combine the milk, raspberries, strawberries, protein powder, and vanilla extract in a blender. Blend until smooth. Pour over crushed ice in tall glasses and serve immediately.

NOTE: Look for 100 percent whey protein powder in health food stores or in the fitness section of your local market. Or use soy protein powder.

Makes 2 servings

Mushroom-Barley Risotto
3 cups sliced button mushrooms
1 cup nonfat beef broth
1/2 cup pearl barely
3 oz. shrimp, peeled, deveined and cut in half
1 cup nonfat sour cream
4 cups water
1 Tbsp. dried sage
1 Tbsp. garlic powder
Salt and cracked black pepper to taste

In a large saucepan, combine the water, mushrooms, beef broth and barley. Simmer for 15 minutes or until most of the liquid has been absorbed. Stir in the shrimp, sour cream, sage, garlic powder, salt and pepper. Simmer for two minutes.

Makes 2 servings

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French Toast with Ricotta
2/3 cup egg whites
2/3 cup nonfat milk
2 slices whole-grain bread
1/2 cup nonfat ricotta cheese
1 tsp. sugar substitute
1 pinch salt
Cooking oil spray
1 tsp ground cinnamon

Whisk together the egg whites, milk, sugar substitute, and salt. Soak the bread in the egg white mixture. Drain the excess liquid. Coat a nonstick skillet with cooking spray and heat the skillet. Cook the bread, one slice at a time, until each side is set and bread is light brown.

Place the French toast on a plate and top with ricotta. Garnish with cinnamon.

Makes 1 serving

Indian-Style Chicken with Curried Yogurt Sauce and Brown Rice
1/2 cup nonfat plain yogurt
1 tsp. curry powder
8 oz. skinless, boneless chicken breast, butterflied and thinly pounded
2 cups cooked brown rice
2 1/2 cups thinly sliced, peeled cucumber
1/2 tsp. ground coriander
1/2 tsp. ground paprika
Salt and cracked pepper to taste
Cooking oil spray

Combine the yogurt, curry powder, coriander, paprika, salt and pepper. Pour 3/4 of the mixture into a Ziploc bag. Add the chicken, seal, and refrigerate for 20 minutes. Drain the chicken and discard the marinade. Coat a nonstick skillet with cooking spray and heat the skillet. Add the chicken and sear on each side until golden brown. Cover the pan and reduce the heat to medium. Cook for 1 minute more and remove from the heat.

Place the chicken and brown rice on plates. Top the chicken with the remaining yogurt sauce and the sliced cucumbers.

Makes 2 servings.

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Antipasto
4 cups canned artichoke hearts, drained
2 cups diced tomatoes
3/4 cup cubed nonfat mozzarella cheese
2 ounces deli-style fat-free turkey, cubed
1 cup fat-free Balsamic vinaigrette
Cracked black pepper to taste
1 tsp. dried basil

In a bowl, toss together artichoke hearts, tomatoes, cheese, turkey cubes, balsamic vinaigrette, and pepper. Garnish with dried basil.

Makes 2 servings

In addition to following Harley's master plan for good nutrition, he stresses the importance of an effective fitness regimen. You don't need a bunch of expensive exercise equipment or a costly gym membership. In fact, this portable workout can be done anywhere, anytime.

Try Hollywood's Hottest Weight-Loss Plan