Small studies.
A consistent signal.
Grounding has been studied for sleep, stress hormones, body voltage, recovery and circulation. The research is early and most studies are small, so we show you every paper we rely on: what it measured, how it was designed, and what it doesn't prove.
- 58× Lower body voltage when groundedBrown, 2016 · n = 50
- 20 Published papers in our libraryEach one linked to its source
- 6 Key studies, summarized belowSize and design included
- 90 Nights to test it on yourselfFull refund if it's not for you
What the studies found. In plain English.
Six studies we cite across this site, with their size and design. Small samples and pilot designs make these signals worth testing, not settled science.
Promising, not settled. Several of these researchers have worked with grounding companies, so we link every paper — and give you 90 nights to judge for yourself.
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Sleep & cortisol
Sleeping grounded for 8 weeks lowered night-time cortisol and moved its 24-hour rhythm toward normal. Nearly all participants reported better sleep and less pain and stress.
Pilot study · conductive mattress pad · no control group
Ghaly & Teplitz, 2004 -
Body voltage
Grounding reduced the AC voltage induced on the body by household electric fields by an average of 58-fold.
Measurement study · grounded vs. ungrounded
Brown, 2016 -
Muscle recovery
After eccentric exercise, the muscle-damage marker creatine kinase rose in the sham group but not in the grounded group.
Randomized · sham-controlled
Brown, Chevalier & Hill, 2015 -
Mood
One hour of grounding significantly improved pleasant and positive mood compared with sham grounding.
Double-blind pilot · sham-controlled
Chevalier, 2015 -
Circulation
Two hours of grounding raised red blood cell zeta potential by an average factor of 2.7 and reduced red-cell clumping.
Before/after measurements · no control group
Chevalier, Sinatra, Oschman & Delany, 2013 -
Inflammation
Review of grounding research: shifts in white blood cells and inflammatory markers, and the hypothesis that the Earth's free electrons act as natural antioxidants.
Narrative review
Oschman, Chevalier & Brown, 2015
Every paper, linked. Read them yourself.
Published research on grounding, linked to PubMed or the publisher so you can read the source. Filter by topic, or search by title, author or year.
- 2019
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2015
2015Sleep & recovery
Grounding after moderate eccentric contractions reduces muscle damage
- 2013
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2010
2010Sleep & recovery
Pilot study on the effect of grounding on delayed-onset muscle soreness
- 2004
- 2019
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2015
2015Mood & wellbeing
The effect of grounding the human body on mood
- 2010
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2016
2016Body voltage & circulation
Effects of grounding on body voltage and current in the presence of electromagnetic fields
- 2015
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2015
2015Body voltage & circulation
Grounding the human body during yoga exercise with a grounded yoga mat reduces blood viscosity
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2014
2014Body voltage & circulation
Grounding the human body improves facial blood flow regulation: results of a randomized, placebo controlled pilot study
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2013
2013Body voltage & circulation
Earthing (grounding) the human body reduces blood viscosity: a major factor in cardiovascular disease
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2012
2012Body voltage & circulation
Earthing the human organism influences bioelectrical processes
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2011
2011Body voltage & circulation
Earthing the human body influences physiologic processes
- 2020
- 2017
- 2015
- 2012
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2011
2011Reviews
The neuromodulative role of earthing
No studies match that search.
We list human research on sleep, recovery, mood, body voltage and circulation, plus the main review papers. We've left out animal studies and studies of specific medical conditions. Several authors have worked with grounding companies. GroundingFlow is a wellness product; it isn't intended to diagnose, treat, cure or prevent any disease.
The fine print, in plain English.
Questions about a specific study? Email info@groundingflow.com.
Contact usIs grounding proven?
Not in the way a medicine is proven. Most grounding studies are small pilots, and some have no control group, so we treat them as promising signals rather than settled science. That's why we link every paper and give you 90 nights to test it on yourself.
Who did these studies?
Researchers in several countries, published in journals including the Journal of Alternative and Complementary Medicine, Frontiers in Physiology and the Journal of Inflammation Research. Several authors have worked with grounding companies. We point that out so you can weigh the evidence for yourself.
What does “58× lower body voltage” mean?
In Brown (2016), researchers measured the AC voltage that nearby household electric fields induce on the body, first ungrounded and then grounded, in 50 people. Grounding lowered it by an average factor of about 58. It's a measurement of electrical charge on the body, not a measure of health on its own.
Why don't you say the mat treats pain or disease?
Because the evidence doesn't support claims like that, and a wellness product shouldn't make them. The research looks at sleep, stress hormones, body voltage, recovery and mood. Customers most often tell us about deeper sleep and easier mornings. Individual results vary.
How can I judge it for myself?
Sleep on it every night. The included tester confirms your outlet is grounded, and you have 90 nights to decide. If you don't notice a difference, contact us for a full refund.
Don't take the studies' word for it.
Test it for 90 nights.
Sleep on GroundingFlow every night. If you don't notice the difference, contact us for a full refund. Free US shipping.
Start your trialfrom $94.99- Free US shipping
- 90-night guarantee
- Conductivity tester included