The personal trainers keeping celebrities in shape

The personal trainers who keep celebs in shape - Having a fit body is not an easy job and often requires the help of experts. Who has never looked at a celebrity's body and thought 'I want to look like that!?'

Well, the wonderful bodies many celebs have are often the result of a joint effort with their personal trainers. These professionals are highly sought after by A-listers for their innovative methods and the results they achieve.

Check out the gallery and get to know the methods used by the personal trainers of the stars!

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Gunnar Peterson - The personal trainer (PT) is known for working with Jennifer Lopez, Angelina Jolie, and Sofia Vergara. He also has a track record for training top athletes such as Mike Tyson and Pete Sampras.

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Gunnar Peterson - Jennifer Lopez - Gunnar Peterson does not use a single fitness method. Throughout his career, the PT developed a huge variety of workouts according to the most diverse needs of his clients.

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Gunnar Peterson - Angelina Jolie - Some of his famous workouts include G-Force, Core Secrets, Reduce and Renew, Ready to Go, and Stronger by Design.

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Gunnar Peterson - Sofia Vergara - Gunnar Peterson's workouts are based on the notion that there are no quick fixes. It is a matter of consistency and commitment.

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Harley Pasternak - The PT has trained many A-listers, including Lady Gaga, Rihanna, Katy Perry, and Megan Fox.

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Harley Pasternak - Lady Gaga - Before becoming a PT, Harley Pasternak worked as a Nutrition and Exercise Scientist for Canada's Department of National Defense.

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Harley Pasternak - Rihanna - Harley Pasternak is the author of many
fitness and diet bestsellers.

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Harley Pasternak - Katy Perry - Many of his workouts are based on body weight exercises and favor endurance.

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Harley Pasternak - Megan Fox - These exercises speed up the metabolism, burn more calories, and have a fat-burning effect.

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Anna Kaiser - The personal trainer's client list include Sarah Jessica Parker and Shakira.

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Anna Kaiser - Sarah Jessica Parker - Anna Kaiser believes that the worst enemies of a fitness routine are pain and boredom.

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Anna Kaiser - Shakira - She is famous for mixing yoga, pilates, and dance moves in her workouts.

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Justin Gelband - Among his famous clients you'll find some Victoria's Secret models such as Miranda Kerr, Irina Shayk, and Candice Swanepoel.

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Justin Gelband - Miranda Kerr - In addition to being a PT, Justin Gelband is also a massage therapist.

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Justin Gelband - Irina Shayk - Justin Gelband creates nutritional programs and his workouts are based on pilates, boxing, and yoga techniques.

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Justin Gelband - Candice Swanepoel - The PT also likes to incorporate water therapies in his workouts. He usually teaches his clients how to swim.

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Ashley Borden - She has worked with celebrities such as Christina Aguilera and Ryan Gosling.

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Ashley Borden - Ryan Gosling - Ashley Borden is a fitness and lifestyle consultant. Her technique is to take on her clients' weaknesses and turn them into something positive.

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Ashley Borden - Christina Aguilera - Ashley Borden advises women to consume essential fatty acids as these are considered good fats.

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David Kirsch - The personal trainer is famous for preparing Victoria's Secret models for shows.

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David Kirsch - David Kirsch is an expert in health and well being, regardless of his client's age and fitness level.

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David Kirsch - David Kirsch believes that positive results derive from a variation of exercises in the training routine.

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David Kirsch - The PT also stresses that healthy habits should be encouraged since childhood by parents.

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Erin Oprea - Erin Oprea is considered a fitness guru and is responsible for the fantastic shape Carrie Underwood (pictured) is in. The PT also works with other celebrities, including Jennifer Nettles and Lauren Alaina.

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Erin Oprea - Jennifer Nettles - Erin Oprea likes to train her clients in a more intimate environment - her own home.

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Erin Oprea - Lauren Alaina - One of Erin Oprea's tips is to count each step we take. The PT says we should take on average 10,000 steps per day.

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Tracy Anderson - The PT has worked with celebrities such as Gwyneth Paltrow, Kim Kardashian, Nicole Richie, and Victoria Beckham, among others.

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Tracy Anderson - Gwyneth Paltrow - Tracy Anderson owns several gyms around the world.

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Tracy Anderson - Kim Kardashian - But you can do her workouts from the comfort of your own home, by watching her fitness DVDs.

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Tracy Anderson - Nicole Richie - Tracy Anderson became known for her famous Tracy Anderson Method.

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Tracy Anderson - Victoria Beckham - She has also developed a workout specifically for women who are about to give or just gave birth.

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