Interesting scientific paper on this:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3265077/
The research done to date supports the concept that grounding or earthing the human body may be an essential element in the health equation along with sunshine, clean air and water, nutritious food, and physical activity.
Apparently, it’s all to do with the vast supply of electrons found on the surface of the Earth.
Earthing / grounding is correlated with better sleep and reduced pain – as a result of either walking barefoot outside, or just sitting barefoot outside.
The graphs below show cortisol levels before and after grounding.
Subjects were grounded during sleep on a specialised mattress –
