[HORMONES] [EARTHING] Composite cortisol circadian levels before and after grounding to earth during sleep. Effects of grounding 773 pulsed high-frequency electromagnetic field during waking affects human sleep.

The Biological Effects of Grounding the Human Body During Sleep as Measured by Cortisol Levels and Subjective Reporting of Sleep, Pain, and Stress.

www.ncbi.nlm.nih.gov/pubmed/15650465 Our Place in Nature: Reconnecting with the Earth for Better Sleep by James Oschman

Download link is at lower right hand corner:

www.researchgate.net/publication/8081852_Our_Place_in_Nature_Reconnecting_with_the_Earth_for_Better_Sleep