Im 23 year old male, and I had the same feeling/ability since I was a kid, I can relate to most of the feelings described in this thread, for me its feels like clenching a muscle in the base of the spine I can also deel it in the back of my head, it gets pretty uncomfortable the longer I hold it. The most noticeable feeling after doing it multiple times in a row is body heat I feel warmer to the point where I sometimes start sweating but just a little bit. Im actually interested if females do expirience the same feeling or its exclusive to males. I juste signed up in this forum, I wish you all the happiness in the world.
