When the human body is exerted during physical activities such as workouts or a run, it is usual for the heart to beat faster than normal. However, there are times when the heartbeat can feel ...

Everybody has natural rhythm. Call it your inner drummer--the heartbeat keeps time for the rest of the body. But what happens if your beat's too fast or slow? In medical terms, that's called cardiac ...

About 2 million Americans have a heart condition called “ paroxysmal supraventricular tachycardia ,” or PSVT. An electrical ...

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 ...