Ideally it would be much easier to cleanse the body big time with Hulda Clark cleanses (Colon, Kidneys and Liver) and nourish it with proper levels of raw food along with WATER and Himalayan Salt!
The body only gets colds etc because its there to eat the pollution and cleanse the body. If you body is polluted and you zap the organism by pulling the iron magnetically with a zapper disturbing and killing organisms then the body will just pile up even worse. A cold etc can actually be your friend!