Your heart may beat too quickly, too slowly, or with an irregular rhythm.
In Summary
•It is normal for your heart rate to speed up during physical activity and to slow down while resting or sleeping.
•Your heart may beat too quickly, too slowly, or with an irregular rhythm.
An arrhythmia, or irregular heartbeat, is a problem with the rate or rhythm of your heartbeat.
Your heart may beat too quickly, too slowly, or with an irregular rhythm. It is normal for your heart rate to speed up during physical activity and to slow down while resting or sleeping.
