Hummingbirds are fascinating little birds found all over the Americas. They are known for their beautiful colors, aerial ...

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 ...

When it comes to heart health, many conditions are tricky to diagnose because their symptoms can be similar to others, and atrial fibrillation (AFib) is no exception. That’s a problem, since untreated ...

In today's fast-paced life, even small warnings about our health are very important. Usually we think that the heartbeat increases only when we run, walk fast or do heavy work, which is a normal ...

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 ...

Most of the time, you don't think about your heartbeat. It works quietly in the background of your day. But sometimes your heart's rhythm sends important cues from ...

Sitting quietly at your desk, watching TV, or lying in bed at night, your heart should be taking it easy – beating steadily and calmly at somewhere between 60 and 80 beats per minute for most healthy ...

Share on Pinterest Researchers say a nasal spray could become a new treatment for rapid heartbeats. ProfessionalStudioImages/Getty Images About 1 in 300 people in the United States have a racing ...

Most of us have had that unsettling sensation when our heart seems to flutter or "skip" a beat — but when heart palpitations start happening more frequently, you may wonder if it’s something to get ...

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 ...