A racing heart is usually a sign of agitation or excitement. But if it's not unusual for your heart to beat too fast or to skip a beat, it might be worth having it checked out by a doctor. In order to ...

Your heart rate can provide valuable clues to help you stay well. Here’s what docs want you to know.

Highly active people, particularly endurance athletes, often have lower resting heart rates than others, below 60 beats per minute. This is because aerobic exercise strengthens the heart, allowing it ...

Heart rate variability measures the variation in time between successive heartbeats, providing insights into the balance between the sympathetic and parasympathetic nervous systems, which influence ...

Anne R. Crecelius does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...