Sooo, I work at a chemist. A few days ago I came in to find these bracelets on the counter. Didn't give them another thought until someone else brought it up. I gave them my opinion, that they're complete, designed crap for fools and for those that part with their money. Then I put one on. My hand felt lighter. I kid you not. My hand felt noticeably lighter. I put a few more one, and it felt lighter still. It was like an optical illusion, where your brain is telling you something, but you know it isn't true. So this got me thinking, doing a few experiments and the like - moving the bands, banging my hand around, etc. What I noticed was that it seemed to dull the senses - touch, pressure, pain etc. So the conclusion I have come to is as follows. Do they heal? Dunno, doubt it, I'll leave that one up to the scientists. Is there any effect or is it placebo? Well, I'm not convinced it's placebo, as I was certain nothing would be different when I first put it on. However, I'm not going to underestimate the power of the human mind. But with some thinking, I have constructed a hypothesis that I believe makes some sort of sense. I don't know much about how the nerve system works, though I understand it is some sort of electrochemical impulses. ie, a small voltage running on a cable from start of the nerve to the brain. Pushing speculation a bit, it is fair to say that the voltage increases for larger effects on nerve endings, ie, pain would be a larger voltage than no pain. At all times there would be some sort of voltage acting on the cable, be it the shape of the hand, clenched muscles, wind through fingers, or just the weight of your hand. At all times this voltage would be changing depending on what is happening that very moment, could be hundreds of variables. Now I don't think it is stretching the theory to far to say that with the changing voltage, the current is also changing. It is here that things get a bit closer to home. Lenz's Law is an extension of faraday's law of induction that states if a current is put through a magnetic field, a current and voltage is produced in the reverse direction. This voltage counteracts the voltage of the initial current and causes a voltage drop over the magnetic field. This voltage drop over the magnetic field produced by the band would mean that only a portion of the intial voltage would reach the brain, fooling it into thinking the nerves are receiving less information than usual - hand weighs less, pain upon impact is less etc. So does it work? Who knows. However, there would be a few points to consider. 1) Primarily this. This would only work while the brain is still used to the standard voltages being normal. After time it would readjust to the new standard as normal, and would make taking it off a bit weird. 2) Could potentially be dangerous if it fools you into thinking you are not as badly injured as you might be. However, if something is broken, you normally know about it, magnetic field or no magnetic field. 3) It's a waste of money. I only bothered because I could try it for free. My year 12 physics is a bit rusty, and I can't really remember implications of faradays law re. static/dynamic I and static/dynamic B but I believe I have satisfactorily covered the dynamic current case. Swapping the frame of reference, a changing current is also a changing flux. Discuss. It would be interesting to play with some Neodymium magnets, and see if they have effect.