heart rate

Whether it’s regular or irregular, slow or fast, your pulse rate can help identify whether you have any potential cardiac problems...

Older couple on sofa

Steady electrical impulses make the heart beat with such regularity that you don't even notice it. But if the system develops a...

Older couple hiking

About 36 million times a year the heart beats exactly when it's meant to – which is why it's so unnerving when it occasionally...