I want to qualify myself as having a BS in Biology & Chemistry minor. So I am really interested in discovering if this thing really works and how if it does. I had on done several years ago at a demonstration and the water did turn color. I also had many body sensations that occurred during the "cleanse" and felt invigorated and light headed for several hours after...so something did happen. What? I asked the guy all kinds of specific questions and he couldn't answer any of them. Fast forward...I have a friend with a bath and last week she pulled it out and used it I observed the water turn orange/brown. I asked her all the same questions and her understandingk of chemistry & cell biology is to limited to give me any answers. I then tried it. Again I had all kinds of body sensations. pain and tingling in my toes, pulsing in my had, dizziness in my head. As I was reporting this to her she didn't know what was happening and the weirdest thing was the water was mostly clear and hadn't changed. Next another friend did it and his water turned orange then brown and finally a green-black. It was the same set up with the same water so...something is happening but what?