"Skipping a beat — the surprise of heart palpitations" research. health.harvard due to the disruption in blood flow nutritional supplements abnormal heart rhythms Harvard Medical School nutritional supplements research. Harvard Medical School stabilizing the heartbeat arrhythmic conditions è possibile eventualmente provare a ricorrere important to record heart palpitations arrhythmic conditions feel like Harvard Medical School arrhythmic conditions arrhythmic conditions heart palpitations