Hmm. Interesting replies. Thank you all. Yes, for me the sensation I've described is constant. It has nothing to do with my mood, although there's something of an ecstasy feeling to the sensation, so it might be a part of mixed states. Or not. The feeling, or perception, of the energy doesn't seem to me to be directly related to me. It seems to be something I'm aware of. But then, I'm not sure we can perceive things without filtering the perception through ourselves.