Your heart’s job is to keep your pulse steady to pump blood throughout your body. Sometimes your heart rate is slower when you’re relaxing, and sometimes it’s faster when you’re exercising or stressed ...

Frequent exercise doesn't just strengthen the heart—it also changes the nerves that control it, according to new research ...

Recurring nighttime disturbances, such as chest discomfort, itching, or frequent urination, may signal underlying health ...

A Kentucky researcher has solved a mystery of how the heart functions that has been unanswered for six decades. In a collaboration with the University of Massachusetts, a team used samples of donated ...

Researchers have created over 3,800 anatomically accurate digital hearts to investigate how age, sex and lifestyle factors influence heart disease and electrical function. For the first time, ...

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?

There are many tools available to check your heart rate, but if you don’t have one, you can still obtain an accurate reading using your pulse and counting in your head or using a stopwatch or timer.

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

Heart disease may contribute to changes in sexual function, such as reduced libido, vaginal dryness, or erectile dysfunction. However, sexual activity is safe and healthy for most people with heart ...