 The investigators do not know whether magnetic treatment will relieve back pain so the investigators will test this by applying a powerful electromagnet to the area of the back having pain. In some patients, the magnet will be turned on, but in other patients the magnet will not be turned on. Neither patients nor patients treating doctor will know whether the magnet was turned on or not, although the study team will know which patients received treatment with magnetic pulses. The effect on pain will be recorded periodically for 2 days. If the patients reported pain is reduced by having the magnet turned on compared to patients who do not have the magnet turned on, then the magnet may have reduced the pain. Additional studies in patients will be needed to be sure that the magnet therapy is reducing low back pain. 