Grounding, also called earthing, means bare skin on grass, sand or soil, or conductive mats sold for the same purpose indoors. Walking barefoot outside feels calm and costs nothing. The electron-transfer story sold with the mats stays unproven.
The published base is thin. Two often-cited reviews gather pilot studies describing better sleep, less pain and steadier cortisol rhythms, but most trace to one research group, few participants and no blinding. Independent replication is scarce. No rigorous trial has tested whether grounding changes any disease outcome, and the reviewers themselves ask for larger studies that have not arrived.
Doing it: Barefoot walks in the park are free, pleasant and count as light movement. A mat is harmless if it helps you unwind, merely expensive. If the ritual appeals, spend the mat money on flexible-soled shoes and cover more ground instead.
Who it suits: Open to everyone with little downside expected. Simply do not let it crowd out the basics that carry strong grades elsewhere on this site: sleep, movement, food and your checkups.
Sources
- Oschman JL et al., J Inflamm Res, 2015 (review of grounding studies)
- Chevalier G et al., J Environ Public Health, 2012 (earthing review)
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