Add Yahoo as a preferred source to see more of our stories on Google. You can improve your heart health with a few easy steps if you are prone to arrhythmia. Patrick Pleul/dpa-Zentralbild/dpa Your ...

It's a common yet uncomfortable sensation when the heart beats rapidly for a second or two and then becomes normal. Whether it occurs when one is resting, after going up the stairs, or even while ...

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'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 ...

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 ...

A new study shows that the sinoatrial node (SAN) -- a small but powerful structure in the human heart that serves as its natural pacemaker and initiates every normal heartbeat -- runs on different ...

A person’s resting heart rate is often seen as a simple sign of health. Many people believe that a lower resting heart rate ...