Oh wow I did not even knew that such a thing exists lol. I guess that now I can explain to myself why it felt so good to sleep on the soil in the hot summers in the countryside , it is a grounding experience. I wonder if people who can sleep on the soil get the most benefits from Mother Earth. I mean if it is summer and warm and clean...why not. Or maybe to be able to camp in your own backyard instead of sleeping indoors...