I recently read a book called "Earthing" by Clinton Ober and a couple of doctors (you can find it with "Earthing" and/or Clinton Ober at Amazon). It includes a lot of research about how electricity in our homes, offices, etc. affects us, and how getting in touch with the earth (being grounded - connected to the earth (including sand, grass, dirt, cement, lakes/ponds, etc.) with bare feet, or by being connected to special grounding pads that are plugged into grounding sockets). The research seems to indicate that when we become grounded, our body discharges the excess positive electrons that can build up in our body, thereby reducing inflammation in the body, and bringing great health benefits. (If you read the reviews of the book on Amazon, you'll find some amazing stories). I'm normally pretty skeptical and hard to convince, but the book convinced me, and now my husband and I sleep grounded (via a special conductive pad on our bed, which is connected to a grounding rod outside our bedroom window) and I also have a grounding pad under my feet at my computer desk. I do believe it has helped reduce my pain levels from arthritis and related stuff, and my husband said he sleeps much better, feels more refreshed in the morning, and he now rarely has to get up to go to the bathroom in the middle of the night. (something he used to do at least once every night, often twice) Whether it's real or placebo effect, I'm not sure, but it does seem to help, and the research seems convincing to me.