You're curled up on the couch, finally relaxing after a long day when suddenly, your heart starts racing. You're obviously not exercising and you don't think you're stressed, so why does it feel like ...

Signs of an irregular heartbeat: A rapid or slow heartbeat can be dangerous for our health. Let us explain how dangerous it can be if the heart stops beating. What is arrhythmia? Emergency Symptoms Of ...

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 ...

DEAR MAYO CLINIC: When I go for a walk or to the gym, people always seem to be checking their pulse, whether by hand or with a wearable. Why is heart rate so important? ANSWER: Your heart rate, or ...