Why re-ingest toxins?

I read the information about this therapy but I still cannot understand how drinking toxins which our bodies naturally work so hard to excrete can be a good thing? Our bodies get rid of the poisons it does not need through urine output, excrement, exhalation and perspiration. If you drink your own urine, isn't this just putting the toxins back in?

And if this really is a good thing, then why stop there? Why not re-ingest the other disgusting waste products of our bodies? I think we are naturally disgusted by this thought for a reason-- because (to my thinking) it just can't be good for you!

OF course, I am TOTALLY open for learning about this, really. Just I can't understand the toxin thing, and would appreciate an explanation.

Thanks!
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