Could grounding improve your sleep? The findings indicated that spending 30 minutes on a grounding mat five times per week resulted in improved sleep quality. So should you cash in on your favourite influencer’s discount code and grab a grounding mat? So if you love your grounding mat or grounding sheet, or want to see if grounding works for you, feel free to give it a go. While there’s limited evidence that grounding outdoors can improve sleep, spending time in outdoor light may itself benefit sleep, regulate circadian rhythms, and improve mood.