Journal of Environmental and Public Health / 2012 / Article / Fig 1

Review Article

Earthing: Health Implications of Reconnecting the Human Body to the Earth's Surface Electrons

Figure 1

Cortisol levels before and after grounding. In unstressed individuals, the normal 24-hour cortisol secretion profile follows a predictable pattern: lowest around midnight and highest around 8 a.m. Graph (a) illustrates the wide variation of patterns among study participants prior to grounding, while (b) shows a realignment and normalization trend of patterns after six weeks of sleeping grounded.

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