Besides walking barefoot, you can, of course, ground yourself by sitting on the Earth or on a chair with your feet planted on the ground, while reading a book, listening to music, or just plain relaxing. For people with foot issues or tender feet, we recommend sitting in a comfortable chair with your bare feet placed directly on the Earth.
To make the Earthing experience most effective, dampen the soil or grass for added conductivity. Leave your feet squarely on the Earth and sit there for thirty or forty minutes. Actually, when any part of your body – your hands, forearms, legs, for example – makes contact with the ground, you are receiving the energy from below.
If you have the opportunity, connect with the Earth two or three times a day. The more time you put in, the more you benefit. The more compromised your health is, the more often and longer we recommend that you do this. But even in a half hour or so, you will have a remarkable shift. We have already measured some important physiological improvements within a half hour to forty minutes, and many more will come to light with continued research.
If you can’t do these things outside, a concrete basement floor is a good venue, if you have one in your house. Dampen the area around your feet as well to enhance conductivity. Concrete, by the way, is a conductive substance, made from water and minerals. It sits on the Earth and retains moisture. So the free electrons will pass through just as they will if you are sitting or standing on grass or open ground. If the concrete is painted or sealed, there may not be any conductivity. Asphalt is made from petrochemicals and is not conductive. So don’t expect any benefits from walking on painted or carpeted concrete or asphalt. The same goes for a wood or vinyl surface.
Source: ""Earthing: The Most Important Health Discovery Ever?""