It works by sending a small current that goes in a circuit through the body and generates positively charged ions. The high concentration of the ion field attaches to the negatively charged toxins neutralizing them and the body is able to discard them through the approximately 2000 pores that are on the bottom of your feet. In this process, the detox works to correct the acid-alkaline ph balance as nature intended. There are those that can’t take advantage of this service. If you have a pacemaker or have organ transplants we cannot allow you to take advantage of this service. This is really an amazing service! It can help relieve knee pain and other joint pain because it allows the body to get rid of all the toxins that naturally want to hang out in the joint areas.