I know I was having missing hearbeats. I had physicals every year, and then all of a sudden about 5 years ago, every doctor visit resulted in "missing/skipping heartbeats". About 3 or 4 months after I started running and lost weight, everything went to normal. I don't know why, but I'm not knocking it.
" Far better it is to dare mighty things, to win glorious triumphs, even though checkered by failure, than to take rank with those poor spirits who neither enjoy much nor suffer much, because they live in the grey twilight that knows not victory nor defeat."