Our body is electrical and needs grounding or earthing as it is also called. It happens when you walk with bare feet in direct contact with earth. It allows the electrons to move freely between you and the earth. Many people wear rubber shoes all the time with no direct contact with the earth and thereby cuts the flow of energy. All this energy gets stuck in the body and causes stress and inflammation. Inflammation again causes a wide range of diseases. So discharge your body for 30 min daily to restore a natural and stable state. People say it also helps for chronic pain. Worth a try and it is FREE!