Earthing is literally connecting yourself electrically to the earth. You house’s electrical system’s ground is connected that way if it is newer construction and was wired correctly. The ground at your breaker box is typically connected to a metal rod pounded in the ground. You must realize that we evolved being connected to the ground all the time when we walked barefoot and slept on the ground. And even when we wore furs, we were grounded. The earth is an unlimited source of electrons. Electrons are how atoms bind together. All the bio-electrical and electro-chemical activity in our bodies evolved being grounded to the earth. Once they get past the resistance of the skin, electrons flow readily throughout the body. When we walk barefoot, They even have ready entrance to the body through the acupuncture point Kidney 1 at the bottom of your foot. You can buy my Earthing kit here. You can find Earthing books on Amazon here.
It has been shown that Earthing is good at treating inflammation. Supposedly by neutralizing free radicals. Free radicals are hungry for electrons. So much so they steal them from tissues nearby, making them break down. The body’s immune system reacts to the damage by causing inflammation to clear out the damaged tissues to make way for healing. Now a degenerative process happens the same way due to a lack of electrons. By supplying electrons, Earthing should also slow or stop a degenerative process. I have done that with needles by using the free electrons on the surface of the skin. Earthing “charges up” the capacitance of the skin (the skin has both resistance and capacitance. A capacitor holds charge (akin to a battery). So Earthing is kind of like an antioxidant in that it helps neutralize positive charges in the body. It also acts like a blood thinner by supplying the membranes of red blood cells with electrons. Since like charges repel each other, that causes the red blood cells not to clump up thus allowing the blood to flow more freely.
Earthing also seems to calm the nervous system, making you feel more relaxed and sleep better. I have found it also raises my blood oxygen level. Research showed that too. This is either by making you more relaxed and then breathing more deeply. Another possibility is it is supplying more electrons to the lungs to help with the binding on oxygen to the hemoglobin (not that likely from my study of the question).
Since most chronic illnesses are associated with inflammation, that could be why it tends to help most chronic diseases. Acting like a natural blood thinner would help with heart problems. Athletes have found it helps there endurance and speeding healing from injuries. I have found it useful in my practice at times so I have an aluminum plate you can put your bare feet on. I also sell a wire you can plug into the ground plug on an outlet in your home (after you check it with an outlet checker to make sure it is wired correctly). The other end has pin connectors for sticky electrodes that you can put on the bottom of your feet. That way you can treat yourself at home.