A very tiny patch of low strength magnetic material and a high strength magnet.
The small patch should not be too strong (not over 100 gauss, which is the unit of measurement for magnetic field strength). It should be 1⁄2 inch wide and about 1 inch long. It should be placed lengthwise over the center-line that you can draw along your spine. The back of your neck is convenient. The North side of your patch is placed against your skin. Tape it down securely with cellophane tape. Patches as small as a few gauss need recharging by a high strength magnet after several days. Patches as high as 100 gauss might last a year before needing a charge.
The main purpose of the small magnet is to pull iron and lanthanides out of your tissues; this includes excess ferritin that coats your white blood cells. These two effects raise your immune power. Soon bacteria can be devoured again and the white blood cells fill up with asbestos, lanthanides and bacteria, evidence for their ability to devour them again.
The high strength magnet should be a ceramic block with a strength between 1000 and 4000 gauss. Keep it away from delicate instruments since they could be instantly ruined.
Determine which is the North side of your magnets even if they come already labeled. This means the side that attracts the end of a compass needle pointing North. You must be certain of this; place the compass on a table; it will soon settle down and point northward. Identify the tip that points North. Now bring your magnet, slowly, toward the compass, with one side of your magnet facing the compass. Find which side of your magnet pulls the compass needle tip pointing northward. Label this side of your magnet North. The opposite side is South.
The high strength magnet has more purposes. It will stop DNA production by Clostridium without disturbing your own. To achieve this you must sit on the N pole for 1⁄2 hour daily (not more).
Do not position the magnet over the heart. Do not use the high strength magnet if you have a pacemaker.