iMag Slide Show

Even celebs don't achieve a perfect body overnight. Getting in shape requires a ton of discipline, hard work and a fabulous trainer. But if you don't have the money or time to pay for a pricey gym session, how can you get in a-list shape? iMag talked to trainers of the stars for their celeb workout secrets! 

Jessica Alba: 

This super star is one hot mamma! But she does more than just pick up her adorable two-year-old, Honor Marie, to stay in shape. Her trainer, Ramona Braganza helped her pre-baby body back with her 3-2-1 training method and Jessica has continued using it ever since. The method includes the following:

1. 10 Minutes of cardio for warm-up. Increase intensity with fast and slow intervals.

2. Three strength training exercises that focus on three body parts, done three times. For instance, Jessica likes shoulder-presses, rows and lateral pull-downs. 

3. Another 10 minutes of cardio, such as an elliptical machine.

4. Three more strength training exercises targeting the same three body parts.

5. Another 10 minutes of cardio.

6. Floor work to strengthen core.

From her legs and abs to her glutes - Jennifer Lopez may have one of the best bodies in Hollywood. So what's her secret workout weapon? Gunnar Peterson. The top trainer told iMag that JLo works out two-to-six times per week and that it's all about variety: “When working with Jennifer I do many, many different variations of squats and lunges to strengthen her glutes and back muscles. We also do squats with barbells and heavy weights as well as kettle bell workouts. The amount of weight differs on the number of sets we do. For three sets with six-to-ten reps depending on the exercise, we’ll use 15 to 20 pound weights and for three sets with 15 to 20 reps we might only use eight to 10 pound weights."

From her sexy Calvin Klein commercial to "Avatar," Zoe Saldana has been everywhere this year. It's no wonder the star is in impeccable shape. Her trainer, Steve Moyer gave iMag tips on how you can achieve results like Zoe's at home. 

On Working Out: To lose weight and tone, you should be doing cardio and weight training. One efficient way to do both is to do your cardio after weight training in the form of HIIT, or high intensity interval training. One specific example of HIIT is this: On a stationary bike, pedal at an easy to moderate pace for 60 to 90 seconds, then pedal at 100 percent effort for 10 to 15 seconds. Repeat these intervals for ten to 15 minutes. 

On How You Can Stay Motivated: The key is knowledge. If you know the good things that working out does for you, that should be motivation enough. Also, focus on the feeling you have after you work out. Many of my clients don't necessarily like the actual work out itself, but they will say afterwards, "Wow I feel great." That's when I tell them to remember this feeling and I'll remind them of that feeling during sessions when they aren't 100 percent there. 

When you're petite like Christina, keeping in shape can be challenging. But not if you have superstar trainer like Tee Sorge! Tee told iMag, “I use weight training to keep her muscles strong and toned.” More specifically, she has her "hold medium to heavy weights while walking on a treadmill at an incline. Christina uses the weights to do bicep curls and chest flies. This helps with muscle tone and stability." But besides weight training what else does the "Burlesque" star do? "Jump roping, boxing, and running all focus on maintaining excellent cardiovascular health, which is crucial to Christina as a singer and dancer," says Tee. 

This Panamanian actress is toned from head to toe. And although her mother is a former Sports Illustrated swimsuit model, Jordana didn't achieve this body from genetics alone. Her trainer, Harley Paternak told iMag that the celeb trains four to five times per week and follows his "5 Factor Program." The program, which Paternak created himself, consists of the following five-step workout:

Phase 1: 5 Minutes of Cardio (elliptical, treadmill, cycle, etc ...)

Phase 2: 5 Sets/25 Reps of Upper Body Strength Training (ex: back row)

Phase 3: 5 Sets/25 Reps of Lower Body Strength Training (ex: dead-lifts)

Phase 4: 5 Sets/25 Reps of Core Strength Training (ex: side bends) 

Phase 5: 5 Minutes of Additional Cardio

Over the past few years, America has truly transformed her body into tip-top shape. Her former trainer, Brett Hoebel told iMag that the star worked out three times a week. To tone and strengthen America Ferrara, Hoebel, "did a combination of interval training, using varied amounts of weight at different lengths of time, as well as strength training." He "also incorporated martial arts into America’s workout by doing kickboxing, boxing, and capoeira, a Brazilian style of martial arts that also includes music and dance." 

For more celeb fitness secrets check out iMag's Wellness Page.