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 ...

While your heart rate rises during activity, regular exercise strengthens the muscle, making it more efficient at rest and ...

If you're new to the world of POTS, whether that's because of its newfound connections with Long COVID-19, or its recent momentum on social media, you've probably come across the long list of symptoms ...

Smoking affects the lungs and other organ systems, including the heart. The carbon monoxide from tobacco reduces oxygen to the heart, causing it to beat faster to deliver oxygen to the body. Share on ...

It's essential to seek emergency care if a rapid heartbeat is paired with confusion or chest pain. ER treatments for tachycardia include medications and electrical cardioversion. Managing stress and ...

Does your heartbeat feel out of the pump now, too fast or too slow, or irregular? This is something that is experienced by many people but disregarded. In medical terminology, this condition is ...

Scientists may have discovered another way the human body tries to protect itself from cancer. New research on mice suggests ...