(I'm frustrated that I haven't written about my recent life but I haven't the time to do it tonight, so here's a quick thought)
Percussion/impact play for me is a kind of energy work. The first time someone consensually beat me, I felt it creating this bloom of energy above the place of impact. After they stopped I asked them to gather up that energy and put it into my energy cores, and they did, and it felt like one of the best energy cleanses I've ever experienced. Since then there are certain kinds of overstimulation or exhaustion or drainedness that make me feel a need for that particular kind of relief. I'm not actually into the pain much - it's sort of neutral for me, at least so far.
Being the giver of percussion play doesn't feel quite the same, but I haven't ever had a really prolonged session of that yet. I'm wondering if I am the only one who experiences it this way. I think I'd like to engage in a more lengthy session, perhaps with no sex involved or some sort of lengthy break (so that I can completely wear out my arms without feeling regret).