There are so many ab exercises out there, but the question is do the really work? What ab exercise is favorite?

I like doing core exercises using the pilates ball and doing plank. I get really bored with just regular crunches so I have to vary it up. I use weighted medicine balls on an incline bench or with a partner use the ball to play catch as you both meet at the top of your crunch.

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I've seen people play catch while doing the crunches. It would be nice if i can do a decent crunch. I must say that since i start using My Fitness Coach, I'm slowing becoming strong enough to a proper crunch.