A fast heartbeat can be caused by emotions like stress or anxiety. Dehydration, or drinking caffeine or other stimulants, can ...

Add Yahoo as a preferred source to see more of our stories on Google. You're curled up on the couch, finally relaxing after a long day when suddenly, your heart starts racing. You're obviously not ...

Your heart beats about 100,000 times a day. Sometimes it beats faster and sometimes more slowly, depending on what you're doing and whether, for instance, you're all worked up about something. So ...

Middle-aged folks who don't exercise are putting themselves at risk of life-threatening complex heartbeat irregularities, a new study says. Adults 40 to 65 with low fitness levels had a 52% increased ...

A resting heart rate between 60 and 100 beats per minute (bpm) is considered normal for most people, according to the American Heart Association (AHA). If your resting heart rate is over 100 bpm, you ...

Feeling your heart race can be an unsettling experience. Whether it happens during a moment of stress, excitement or seemingly out of nowhere, a racing heartbeat is often dismissed as just a temporary ...

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 ...

DEAR MAYO CLINIC: I'm a 62-year-old woman with mild mitral valve prolapse. After one of my recent, normal workouts, I felt very strange: weak, clammy palms and a fluttery heartbeat. The symptoms ...

Matthew Brigson regularly gets his heart pumping with martial arts training, but when his heart began racing last August it was cause for concern. Police officer Brigson, a training coordinator at ...

Learn why your heartbeat races after climbing stairs. A cardiologist explains what's normal, the impact of lifestyle, and when to seek medical advice.

Magnesium supports heart health by regulating electrical signals that control heart rate and rhythm, while also aiding the ...