I bought an excercise ball the other day...

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And I havent ever usd one before. I also bought a video to go with it and the bands. I was just wondering if anyone else uses one and how well it worked for them. Im not going to worry about the pounds, but more about the inches because I have a muscular build anyway. I really want to work on my lower abs because I have had 3 c-sections and they are pretty much useless until I strengthen them...Any helpful hints or stories from any of you?