In TODAY.com's Expert Tip of the Day, a cardiologist explains how to slow down a racing heart in times of stress.

In TODAY.com's Expert Tip of the Day, a cardiologist explains why a lower resting heart rate can be a good sign of heart ...

Medically reviewed by Jeffrey S. Lander, MD Key Takeaways Measuring your heart rate at home is easy without needing devices, ...

A heart rate that averages above 100 beats per minute is called tachycardia. You can develop a high heart rate because of ...

Dr. Myerburg answers the question: 'How Do Pacemakers Know To Pace Faster?' — -- Question: How do pacemakers know when I need a faster heart rate, for example when I am exercising or anxious?

You can also test the accuracy of your numbers out on the run, for example by running at what feels like a hard pace (using the ‘talk test’, you should only be able to get two or three words out at a ...