The lowest heart rate of 37 beats / min is not normal, the normal adult resting heart rate of 60 ~ 100 beats / min, less than 60 beats / min is called bradycardia, which can be seen in sick sinus node syndrome, atrioventricular block.
1. Sick sinus node syndrome, because the sinus node lesions lead to the function of the hypogonadism, the occurrence of bradycardia can appear episodes of dizziness, palpitations, fatigue, blackouts and other symptoms of insufficient blood supply to the heart and brain.
2. Atrioventricular block, one degree or two degrees of type I, the heart rate may not change significantly or not much decline, two degrees of type II or more often accompanied by a slow heart rate, may be accompanied by the above symptoms, and even sudden death.
If the heart rate is as low as 37 beats per minute, you should actively go to the hospital to clarify the cause of the disease, and be treated under the guidance of the doctor to avoid delaying the condition and causing serious consequences.