My beating heart

I have been involved in a coed drumming circle which meets every other week or so here in South Florida. I recently made my own drum, but the week before that, about halfway through a session of the circle, I felt compelled to put down the borrowed drum I’d been using and just listen to the other 20+ drummers. I was sitting facing south, if that is important. I don’t know a lot about the specifics; just that I love drumming. Anyway within 3 or 4 minutes I could literally feel my own heartbeat — beating in the center of my chest, and in exact rhythm with the drumming group. It was an exhilarating experience. The leader said later that he knew of that phenomena, he may even have named it (I forgot), but that it had yet to happen to him. I am clueless as to the meaning of this. I just know I want that experience again! Brenda