Heat (infrared radiation) from moxa or a heat lamp will cause increased buildup of structured water. That will cause an increase in the positive charge of the bulk water in the meridians and lymph ducks. That in turn will cause an increase of flow in the channels towards the chest. This then can cause a reduction of edema and a flushing out of toxins from the tissues. These effects are best achieved by applying the heat above the problem area. For example for edema or peripheral neuropathy in the lower legs, put the heat on the knees. this should not be the only treatment but as another way to add to the effect in addition to proper needling and possibly FSM. This will enhance the effect of needling and FSM.