Hi I had tingling in my left calf, I couldn't sleep at night, I tried tying my leg with cloth to stop it, nothing worked.  My son gave me a earth grounding strap to wear, I used it grudgingly when I went to bed, knowing it would not work, in the morning the tingling was 85% gone, l still didn't believe it, wore it again for next week, tingling almost gone, then I got the cord knotted, I could not be bothered to un-tangle, so I didn't wear for next two nights = tingling back. I am now wearing every night, I am a converted believer ... View more