Hello, Newbie here. Guess this is going to be a pretty odd first post. I've recently been having a discussion with a few friends, regarding whether it's plausible that magnetic bracelets could have any form of healing potential (for arthritis and similar conditions). To me, my friends lack of logic is hugely depressing, as I've been trying to explain to them that it's not plausible for magnets to have an effect on blood circulation. (Everyone else in the discussion was in favor of using magnets to redirect blood flow, so my brain is now melting... ) They claim that the iron in blood is magnetic, therefore can be directed to certain locations within the body by use of magnets. I've been trying to explain to them that if this were true, people would explode when placed in MRI scanners. And that since people do not explode when MRI'd, a tiny magnet will have zero impact upon blood flow. Am I wrong? (Much to my regret, I didn't do Physics as a subject beyond GCSE - but I became a maths graduate instead). I'm aware that magnet therapy is considered pseudoscience, I just find it really depressing that nobody in the conversation understood exactly how implausible it was. Would someone mind giving a better explanation of what would happen if blood were magnetic?