I had an interesting thing happen recently for the second time. During my V. Vimalaramsi 6R sit (releasing distractions, releasing body tension, smiling, gently returning to some wholesome brahmavihara feeling), it's as if I suddenly catch sight of a trail of relief, and follow it automatically, a bit like an insect following a light. The relief is interestingly strong, and my smiling and relaxing seemed unusually automatic. And a funny thing happens: my heart starts hammering. It's not disturbing or scary -- I guess it's just excitement or anticipation. But I don't know of what, since I didn't have any big expectations. But I remember thinking "well, go ahead, you wanted to see" and so forth. Eventually it settled down. Is this a recognizable phenomenon?