Workout secrets of Lady Gaga, Alicia Keys and Jessica Simpson revealed!

Harley Pasternak is known for housing the workout secrets that sculpt the amazing bodies of celebrities like Lady Gaga, Alicia Keys, Vanessa Williams and Jessica Simpson.

When Harley Pasternak appeared on The Today Show last week he revealed celeb workout secrets and if you missed it, you'll find it all here.

"Those abs of hers? Killer! Amazing!" says The Today Show host of singer Lady Gaga.

Harley's remark was revealing! The songstress works out before her performances.

"Confidence," says Harley of the star's pre-concert workouts.

Harley goes through a crunch series that helps Lady keep her mid-section whittled, then moves through the moves that keep Alicia Keys upright at the piano.

"The back is really important to be strong and sexy, no matter what you're wearing." says Harley. "It's the stability of your whole torso."

Of Alicia Keys? "She's regal," says Harley.

And to get the moves to nab your Jessica Simpson gams, Harley suggests doing what he calls a "step-over" and utilizing dead lifts to slip into cut-offs like Simpson.

To get the rest of the moves from Harley's appearance on the show, check out the video below.

Harley, author of the best-selling book, The 5-Factor Diet, recommends balancing out a healthy lifestyle with an equally as balanced diet.

Harley is famous for his diet that has been helping people, including hot celebrities, look svelte for years. His 5-factor diet doesn't include weighing, measuring, or counting and is responsible for helping celebrities lean down when it matters most. To check out more on Harley's recommended diet, click here. 

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