Insanity

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I recently had baby number two and am left with this jiggly flap of a stomach. I just started Insanity with my husband and am wondering if it will help with this flabby mess or do I need to do something else along with Insanity? Not really needing to lose alot of weight, I'm back to pre preg weight, but this tummy isn't tightening. HELP? Any moms out there with experience?