What harm does sinus bradycardia have?

The normal heart beats 60- 100 times per minute, which will inevitably affect the blood supply. Usually simple bradycardia is asymptomatic, and beating more than 50 times is usually not serious, which can be seen in healthy people, especially those engaged in sports. But once there are symptoms, such as dizziness and fatigue, it is necessary to treat them in time. In order to rule out other arrhythmia that may lead to bradycardia, such as sick sinus, the heart is affected by many factors, and one examination can't explain anything. Take it easy. Has he had an electrocardiogram before? Are there any basic diseases? It is recommended to consult a doctor for more convenient help.