Classes, from beginner to advanced, are held in the afternoons, and are run by certified instructors.

NEWYORKER: Battleground America

You can sort classes by skill level (beginner, intermediate or advanced) and by trainer specialty (like brides-to-be, postnatal, exercise novices or elite athletes).

WSJ: The Digital Solution: Working Out With a Trainer and Friends via Webcam

"I already have a masters degree in physics and astrophysics a PhD in astronomy, I'm a scuba diver, I speak basic beginner's to advanced Russian, and I have flying experience, " one hopeful, Tracy Parker, tells CNN.

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One of the main things I always focus on when working with anyone, regardless if they are a total beginner or if they are an advanced bodybuilder, is that you need to focus on Progress NOT Perfection.

FORBES: Lee Hayward