I was skeptical when I first heard about this. I thought it might be some weird looking
space-age contraption. But after looking more into it, it really makes sense, check it out.
I thought you weren't supposed to sit, but that is an option. It really helps you "go".

Video 1

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Video 2

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Testimonials
http://www.squattypotty.com/articles.asp?id=253