finally! Someone else who does this!! I do the exact same thing and have been doing it for about a year and a half…pretty much every day, and when I can't convince my fiance to 'rip my back' I do it myself the same way you do. I've never found anyone who does this, or any information on it at all. I was worried I was damaging my spine by doing this? When I first started doing it it hurt realllly bad, but at the same time it felt so relieving. A couple times I even had bruises on my back..but when I stopped doing it I could almost feel the pressure building up between my verts. And needed to do it again. Does anyone know what exactly is ripping? It almost feels like if you pull an elastic band and it breaks..or when you win a game of tug of war lol its extremely tight and when you pull really hard it feels like something rips off of your spine. Does anyone know? I'm going to the dr. Soon and will bring it up.