Buffalo Bills’ 24-year-old safety Damar Hamlin is in critical condition after going into cardiac arrest on the football field Monday night. While this news shocked players and fans alike, over 350,000 cardiac arrests occur outside a hospital each year. Dr. Ammar Habib, a cardiologist with AdventHealth, speaks on what we need to know about cardiac arrest. He also discusses risk factors, the difference between cardiac arrest and a heart attack, the importance of knowing CPR and more.