INTERACTIVE LESSON & SIMULATOR
Interactive Meter: Grounding & AC Body Voltage
Measure how capacitive coupling from unshielded bedroom wiring induces AC body voltage, and test grounding mat resistance.
What the practice claims
Grounding (or “earthing”) products and advice claim that direct physical contact with the earth's surface — or a device wired to simulate it indoors — can reduce inflammation, improve sleep, lower stress and support several other outcomes, based on the idea that the body absorbs a beneficial electrical charge from the ground.
What the research actually contains
Mainstream clinical reviewers describe the existing evidence base as small in volume and generally weak in quality — limited to a handful of studies with small sample sizes, and design or analysis limitations that make it hard to separate a specific “earthing” effect from other explanations.
A confound worth naming
Most earthing happens outdoors, in daylight, often alongside light exercise like walking barefoot on grass. Time outdoors, sunlight and movement all have their own independently documented health associations — which makes it hard for any earthing study to isolate the ground-contact mechanism specifically from the broader activity around it.
Where the claims go too far
Some marketing extends specific medical claims — treating or preventing named diseases — well beyond what any current study supports. If you enjoy time outdoors barefoot, that's a reasonable thing to do for its own sake; treat any product sold specifically as a grounding device as an unproven claim, not an established therapy.