Had an interesting experience during meditation today, I was meditating for about an hour, and heard something that sounded like a baseball bat hitting a ball, a distinct “crack”.
Then a few minutes later, all of a sudden, my body started vibrating, it felt as if electricity was running through it, a fast “hum”. I also heard a sound; a vibrating hum of energy. My body became stiff, distant and my hands felt warm, as this was going on and my mind became really focused (This was going on while I was also excited about what was happening because this was new).
I think the excitement disrupted my mindfulness because that feeling slowly became weaker and then went away, and I came out of the meditation; looking at how long I had been meditating, the Insight Timer said about 49 minutes.