The PEMF belt generates pulsed electromagnetic fields of specific frequency and intensity through a built-in coil. These electromagnetic fields are able to penetrate human tissues and interact with charged particles (e.g., ions, molecules, etc.) within cells, triggering a series of biological effects. For example, electromagnetic fields can affect the permeability of cell membranes, promote the exchange of substances inside and outside the cell, and enhance the metabolic function of the cell.