Nowadays, you can find magnets in socks, mattresses, bracelets, compression sleeves and athletic wear. People claim they do treat pain caused by arthritis, pain in the heel, foot, hip, knee, wrist and back and dizziness. Nonetheless, some still wonder if they work and whether or not to try them. The theory behind using magnets for medicinal purposes stems from the Renaissance period. People believed magnets possessed a living energy and would wear a bracelet or a piece of metallic material to fight diseases and infections or to relieve chronic pain.