Exercise increases heart rate, but the rate usually returns to normal
within minutes after the exercise stops. Anyone who has a fast heart rate or
irregular rhythm with shortness of breath for an extended period of time after
physical activity may have a heart problem. Anyone who has
palpitations, an irregular heart rhythm,
lightheadedness, or fainting when he or she is
physically active needs to be evaluated before activities are continued.
If you have heart disease,
heart failure, or have had a
heart attack, call your health professional
immediately if you have a change in your usual heart rate or rhythm, especially
if it occurs with shortness of breath, at rest, or after mild exertion.