I have been suffering from shoulder pain specifically at night, waking up like my shoulders on fire. When I sleep in certain positions from day, one using the pillowcase, I have not woken up at all in the past 14 days with any pain in my shoulder. I don’t generally write reviews, but I wanted to share this for anyone else who’s been suffering with shoulder issues like I have. The grounding sheet that goes across our bed did not help with my shoulder/neck pain, but after buying the pillowcase, it made a world of difference not sure how this works why it works, but it works.! From a 60-year-old woman who is incredibly grateful to sleep through the night without pain!