Heart rate's 50. Is that normal?

If the heart rate is 50 beats/min, it should be judged according to the specific conditions of the body.

If the heart rate is 50 beats/min, it is generally normal, because long-term exercise can lead to increased cardiac contractility. The blood volume of each contraction is more than that of normal people, so the heart rate will be slower.

However, if the heart rate is 50 beats/min, the patient is accompanied by discomfort, such as dizziness, headache, fatigue, shortness of breath, etc., it is more abnormal, which may be related to congenital heart disease, myocarditis or hypothyroidism.