Is this what you are talking about...cuz I've had homeopaths, chiropractors etc do this and it was ridiculous, the results were the same each time even though I was told there was a difference that was to determine my treatment. I guess my polarity is not 100% <img src="/ubbthreads/images/graemlins/smirk.gif" alt="" />

http://www.youtube.com/watch?v=Sr8MHgWZyAs&mode=related&search=