IamBen

So I also have signed up for an account just to agree with you. I looked everywhere to find someone else who might describe this phenomenon. You have done a pretty amazing job. Since my teenage years I have had, as you say, the 'ability' to decide at any point to relax the back of my thighs. This starts an intense feeling of tingling and 'over relaxation' that builds and becomes unbearable over time. It spreads from my thighs down my legs and up to my belly. It is intense and I cannot imagine any reason that it exists. It almost feels like it would do me damage if I kept it up for too long. I'm not 100% sure but I think the feeling is very similar to one I had as a child that I have heard other people describe. Not many people but more people than have described the electric pleasure from over relaxing. This might not apply to everyone who experiences this but the first time I ever experienced such a feeling was when I was 8 or 9 at school and in PE class they made us climb ropes. For some reason clasping my legs against the rope and lifting myself up seemed very pleasurable. Almost sexual but not quite and way before any of that would have interested me. Fascinating (to me) and unlikely to be investigated because so few people seem to experience it.