Our editors also may be in touch with follow-up questions. An elevated heart rate as a result of physical activity, such as going for a run, is common, but what should your heart rate look like at ...

Bronny James, the 18-year-old son of NBA star LeBron James, suffered a cardiac arrest during basketball practice at the University of Southern California and had to be rushed to the hospital.

Unfortunately, only about 40% of people who experience a cardiac arrest outside a hospital get the immediate help they need before emergency responders arrive. What happens Cardiac arrest is ...