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A normal resting heart rate is between 60 and 100, but many persons, particularly those with good cardiovascular conditioning may have resting heart rates below 60. The medical term for a slow heart rate is bradycardia. In persons with bradycardia, the first issue is whether there are symptoms related to the slow heart rate. If a person has symptomatic bradycardia, then intervention is appropriate. If the person is on medicines that may slow the heart rate that can be stopped, the medical regimen may be altered. Usually a heart rate of 40 without symptoms will be followed.