$EMED When it comes to electricity created in the human body, the energy source is chemical and has to do with the composition of the atoms and molecules present. All the elements we take into our bodies, such as oxygen, sodium, potassium, calcium, magnesium etc., have a specific electrical charge. How those molecules are bound together and how they react to other molecules near them is how chemicals create energy. Some of these electrical impulses found naturally in our bodies activate functions needed for healing.