I don't usually write reviews but I felt I needed to share my experience with this thing. I had originally purchased this for my husband, a big scary Veteran who suffers from chronic back pain, depression, and anxiety. His doctor suggested accupuncture, which we did look into before covid hit. I got this to get him through until we can schedule an actual appointment for him. He was very reluctant, but the first time he used it, he claims his pain was lessened and he was actually able to relax. The more he used it, the more he was able to relax as his pain lessened. He actually fell asleep on it one night because he wasn't in pain. Less pain means less anxiety. He's doing great. When I bought this thing, I thought there is NO way this simple pointy mat could hold such power but there he was, living proof. I was happy enough with the purchase because of that.I suffer from chronic migraines and they are absolutely debilitating. I have tried every treatement available and while a few things have helped me manage them better, nothing has actually worked. Tonight I began feel the dull ache creeping around my skull and started to prepare to be down for the rest of the evening and tomorrow morning. My husband suggested the mat. The relief was instant. And I do mean instant. I nearly cried from the relief. Years and years and so many doctors, and a yoga mat with golf cleats sewed into it the only thing I've ever experienced STOP a migraine from progressing. I still have a dull headache, but I'm still functional and not locked in the dark crying and shaking in pain. I feel amazing. I just can't believe it at all. I am converted.To be clear, thing SUCKS when you first lay on it. I mean, it's ridgid plastic spikes, man. It's not great. After a couple minutes, the pain turns into a warm soothing sensation that radiates throughout your body. If you're one of those people who gets the high from being tattooed, this is the only feeling I can compare it too. Yes, it's painful at first, but it eases into pleasure and relief. Will your experience be the same as mine? Who knows, everyone is different. I'm not a doctor. But I will suggest this mat to everyone I know and will be using it nightly from now on.