Very, very interesting! Thanks for posting it.
As a musician, my sense of timing is very important to me. I find that, within just a few measures, my heartbeat synchs up with the beat, and stays remarkably steady. I drive drummers who rush,, crazy! As soon as my heart synchs up, I feel a sense of calm, and confidence. Get into great discussions with people who insist that tapping one’s foot is important! Don’t know if this ties in with this research, but it certainly is interesting!