About Grounding: The Science

Grounding (also called earthing) is the practice of connecting your body directly to the Earth's natural electrical charge. This can be done by walking barefoot outside — or by using indoor grounding products that connect to the Earth through your home's earthing system. The Earth carries a subtle negative charge; the proposed mechanism is that when you ground, free electrons transfer to your body, potentially helping neutralise free radicals and calm inflammation.

How It Works: The Proposed Mechanism

When your skin touches a conductive surface connected to the Earth, your body's charge equalises with the Earth's. Studies report four effects, and propose a mechanism for each:

• Calmer inflammation — free electrons interacting with inflammatory compounds in the body.
• Steadier cortisol rhythms — stress-hormone patterns aligning with natural circadian rhythms.
• Improved circulation — increased blood-cell surface charge, reducing blood viscosity.
• A calmer nervous system — a shift toward the parasympathetic “rest and repair” state.

The Benefits People Ground For

• Deeper sleep — the most common thing our customers write about; our products are rated 4.8/5 across more than 1,300 published reviews.
• Less stiffness, faster recovery — athletes use grounding between workouts.
• Steadier energy and calmer stress — many report waking refreshed within weeks.
• Long-term wellbeing — people who notice effects describe them as gradual, building with daily use.

The Science: What the Studies Report

Twenty-eight human studies of indoor grounding products have been published over twenty years, from the United States, Poland, Austria, Taiwan, Korea and Malaysia. We have assembled every one of them — design, sample size, result and who funded it — on our research page. The findings we lean on most:

• More sleep, measured — in a randomised, double-blind, placebo-controlled trial at Kyung Hee University College of Medicine (2025), adults sleeping on an earthing mat recorded significantly more total sleep time than those on a sham mat. Funded by the mat's manufacturer.
• Faster recovery, reported independently — in a triple-blinded trial at the University of Salzburg (2019), grounded sleeping accelerated recovery and reduced markers of muscle damage after intensive exercise. No industry ties.
• Steadier cortisol — the first grounded-sleep study (2004) reported lower night-time cortisol and rhythms moving toward the normal 24-hour pattern, with better self-reported sleep. Industry-funded pilot.
• A calmer nervous system — grounding improved heart-rate variability beyond simple relaxation (2011), and reduced red-blood-cell clumping in a pilot study of blood viscosity (2013).

The studies are small and some of the early work was funded by the industry that pioneered the field — so we say studies report, not proven, and we show every study with its funding on the research page. Independent replications now exist in three countries.

Two Ways to Ground

Free, outdoors: walk barefoot on grass, sand or soil for 20–30 minutes; garden with bare hands; swim in natural water.

Consistently, indoors: sleep grounded for 8 hours nightly on a grounding sheet, ground while working with a grounding mat, and verify your connection with our testers — every night of the year, thirty storeys up.

Grounding products support wellbeing and are not a substitute for medical care. If you have a pacemaker, take blood-thinning medication, or are pregnant, please consult your doctor first. See our full health disclaimer.