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 ...

Many people find themselves lying in bed, suddenly aware of their heart beating faster than usual. When the room grows still, the pulse in your chest can feel louder, stronger and impossible to ignore ...

Many people have felt their heart suddenly beat very fast, skip a beat, or flutter for a few seconds. This feeling is called ...

Heart failure and atrial fibrillation are two of the most common heart conditions, especially in older adults. For many years, doctors believed these were separate problems that happened for different ...

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 ...

Cardiovascular exercise, also called cardio or aerobic exercise, keeps you and your heart healthy. This specific type of exercise gets your heart rate up and your heart beating faster for several ...

Heart palpitations are a common pregnancy symptom. Learn how to reduce them, and when they warrant a call to your doctor.