The heart is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is always at work. It pumps blood through arteries to deliver oxygen to organs and ...

You know the feeling. When you first see your crush and your head starts spinning, your palms get sweaty, and your heart begins beating a mile a minute. Is this love? Or is it … an arrhythmia? The ...

SVT results in the heart beating at much faster rate than normal, and can be triggered by exercise, lack of sleep, ...

It can happen anywhere—at a sunny café sipping your favorite drink, on your morning walk, winding down from a long day at work, or enjoying a night out with friends. Out of the blue, you notice ...