Heart palpitations represent the physical sensation of irregularities in the beating of the heart.

Many have experienced a seemingly endless fluttering in the chest, followed by a racing and pounding sensation. Just as you think that you are in the throes of a heart attack, the fluttering and pounding start to ebb. Within a few minutes you feel normal again, except for the lingering anxiety and concern.

Just about everyone has experienced a fluttering or racing heart. For people in generally good...