Sunil Rao, MD a cardiologist at NYU Langone Health, answers various heart-related questions from the internet. He discusses what heart rate is considered too high, the reasons behind heart skipping beats, how EKGs work, and the realities of heart conditions like atrial fibrillation and broken heart syndrome. Dr. Rao also explains the function of defibrillators, the significance of cholesterol, and the impacts of COVID-19 on the heart. Additionally, he touches on topics like heart murmurs, pacemakers, and the correlation between gum and heart health. Learn valuable insights about heart health and preventative measures in this informative video.