The simplest explanation is that aches and pains and other disturbances in our bodies are often caused or exacerbated by inflammation. Electrons from the Earth have natural anti-inflammatory effects and are conducted relatively fast throughout the body, which is a good conductor.
One of the most profound discoveries in modern biomedicine is that many of the chronic and debilitating diseases of our time have the same cause: chronic inflammation. Scientists now realize that many of our aches and pains arise from small regions in the body where an inflammatory response has taken place, where the inflammation has not completely stopped after the healing process has ended.
A low level of chronic inflammation can continue for years, damaging normal tissues and wasting energy. Many scientists believe that the human immune system evolved over a long span of time during which we were in virtually constant barefoot contact with the Earth. It is believed that the immune system began functioning less efficiently as humans increasingly separated themselves from the Earth.
One recent example is the advent of shoes with insulating soles about 50 years ago. Chronic disease, inflammation, and insomnia have skyrocketed ever since and the loss of connection with the Earth may be one totally overlooked cause.
**Please note that none of the statements made here constitute medical advice in any way or make any claim or cure or recommend treatment of any medical condition. Always consult with your personal physician regarding any personal health care issues.**