Can Grounding Improve Your Sleep? What Science Is Beginning to Discover
We spend roughly a third of our lives sleeping. What if the surface we sleep on could play a role in how well we rest?
Sleep is one of the most important foundations of our wellbeing. It is when our bodies recover, our brains process the day, and countless biological processes help prepare us for tomorrow.
Yet, for many of us, a good night's sleep doesn't always come easily.
We invest in comfortable mattresses, blackout curtains, calming bedtime routines, and the perfect room temperature. But researchers have started exploring another, less familiar factor: our body's electrical connection to the Earth.
This is where grounding, also known as earthing, comes in.
The connection between the Earth and sleep
Grounding is the practice of bringing the body into electrical contact with the Earth, either directly by walking barefoot outdoors or indirectly through specially designed conductive materials.
When we stand barefoot on conductive ground, our body's electrical potential moves toward that of the Earth's surface.
Grounding products, such as conductive sheets and mats, are designed to recreate this electrical connection indoors when connected to a properly grounded outlet.
But here's the interesting question:
Could maintaining that connection while we sleep influence how our bodies rest and recover?
Scientists have begun investigating exactly that.
What a 2025 clinical study discovered
In 2025, researchers published a randomized, double-blind, placebo-controlled study in Advances in Integrative Medicine examining the relationship between grounding and sleep quality.
The study involved 60 participants, randomly assigned to use either a grounded mat or a non-grounded placebo mat.
Participants were instructed to use their assigned mat for at least six hours daily over 31 days.
Researchers evaluated several indicators of sleep and wellbeing, including:
- Overall sleep quality
- Insomnia severity
- Daytime sleepiness
- Perceived stress
- Total sleep time measured using actigraphy
The results
The researchers reported improvements in several sleep-related measures among participants using grounded mats.
Participants in the grounding group showed improvements from baseline in reported sleep quality, insomnia severity, daytime sleepiness, and stress scores.
Importantly, the study also found a statistically significant increase in total sleep time compared with the control group.
These findings suggest that grounding may have a measurable relationship with sleep, although larger independent studies are needed to confirm its effectiveness and determine who might benefit.
Scientific reference:
Park, H.-J., et al. (2025). A randomized, double-blind, placebo-controlled study on the improvement of sleep quality with Earthing mat. Advances in Integrative Medicine, 12(3), 100458.
DOI: https://doi.org/10.1016/j.aimed.2025.01.005
What about cortisol, our body's stress hormone?
Sleep and stress are closely connected.
One of the hormones involved in this relationship is cortisol, which follows a natural daily rhythm.
Under typical conditions, cortisol levels are lower during the early part of the night and rise toward morning, helping us prepare for the day.
In 2004, researchers Maurice Ghaly and Dale Teplitz investigated whether sleeping while grounded could influence this pattern.
Their pilot study followed 12 individuals experiencing sleep difficulties, pain, or stress.
Participants slept using a conductive mattress pad connected to the Earth over an eight-week period.
The researchers measured cortisol levels through saliva samples and collected participants' daily reports of sleep, pain, and stress.
What did they observe?
The study reported changes in participants' daily cortisol patterns, including lower nighttime cortisol levels.
Participants also reported improvements in sleep-related symptoms, pain, and stress.
Although the findings were intriguing, the study was small and did not include a randomized placebo control group. This means it cannot establish that grounding itself caused the reported improvements.
Nevertheless, it contributed to an emerging research question: whether electrical grounding during sleep might influence physiological processes associated with rest.
Scientific reference:
Ghaly, M., & Teplitz, D. (2004). The biologic effects of grounding the human body during sleep as measured by cortisol levels and subjective reporting of sleep, pain, and stress. The Journal of Alternative and Complementary Medicine, 10(5), 767–776.
DOI: https://doi.org/10.1089/acm.2004.10.767
Bringing grounding into your nighttime routine
Spending time barefoot outdoors is one of the simplest ways to experience direct contact with the Earth.
But not everyone has regular access to grass, soil, or natural spaces. And during the night, most of us sleep in beds physically separated from the ground.
Grounding sheets offer a practical way to maintain an electrical connection to the Earth while resting indoors.
Made with conductive fibers woven into the fabric, these sheets connect through a grounding cord to a properly grounded outlet.
Once correctly connected, they allow electrical contact between your body and the Earth's ground potential while you sleep.
No extra time outdoors. No complicated routine.
Just an alternative way to incorporate grounding into a familiar part of everyday life.
A simple practice, an evolving field of research
The science of grounding is still developing.
Early studies have reported promising observations involving sleep, stress, and physiological measurements. However, the current evidence remains limited, and grounding has not been established as a treatment for insomnia or other health conditions.
At EARTHERA, we believe that curiosity and scientific transparency should go hand in hand.
Grounding does not replace the essentials of good sleep: a consistent schedule, a comfortable environment, adequate rest, and healthy daily habits.
Instead, it is an emerging wellness practice worth exploring with an open, informed mind.
Because sometimes, reconnecting with nature can begin with something as simple as where we rest.
Scientific references
- Park, H.-J., et al. (2025). A randomized, double-blind, placebo-controlled study on the improvement of sleep quality with Earthing mat. Advances in Integrative Medicine, 12(3), 100458. https://doi.org/10.1016/j.aimed.2025.01.005
- Ghaly, M., & Teplitz, D. (2004). The biologic effects of grounding the human body during sleep as measured by cortisol levels and subjective reporting of sleep, pain, and stress. The Journal of Alternative and Complementary Medicine, 10(5), 767–776. https://doi.org/10.1089/acm.2004.10.76
Disclaimer: This article is for informational purposes only and does not replace professional medical advice. Grounding products are not intended to diagnose, treat, cure, or prevent any disease.
