Running may be good for people with bradycardia, but many people who exercise regularly do not have a significant increase in heart rate, and many people with bradycardia are related to genetics or physical factors. In this case, exercise for bradycardia will not significantly improve, like running will not have a significant effect. However, if the bradycardia is caused by a weak constitution or a serious illness, moderate running in small doses to gradually strengthen the constitution may help the treatment of bradycardia. For athletes like those usually seen, the heart rate is slowed down by a large amount of exercise over a long period of time, mainly because the heart muscle is exercised, which causes the ejection fraction to rise relatively, so bradycardia can occur.