Best position to go poo?

Body: 

I saw an ad recently for a "Squatty Potty" that claims that by positioning the body in as close to a natural "squat" position (the squatty potty is like a foot stool that wraps around the front of the comode upon which you place your feet. It can be 7-9 inches high so your knees are higher than 90 degree angle when you're sitting. This creates a more natural squat position), the rectum is positioned without any muscles or tendons constraining the flow of waste. http://www.squattypotty.com/

I'm just wondering how this works for us prolapsed women, esp. those with no uterus?

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