Hello doc, while doing cardio workout when I placed hand on left side of chest it beating fast in between one beat is dominating one. There is no chest pain at all while exertion. And beating is coming down when stopping exercise. After exercise that is after 5 min I checked manually, pulse rate is 112 ( 28×4). Is anything wrong ??? Am I prone to any irregular heart rate ??? By the way what it could mean flutter heart rate ???