Is it normal to have a heartbeat around 55?

Heartbeat of about 55 belongs to bradycardia, whether it is normal or not should be analyzed specifically, part of the physiological causes of bradycardia may be normal, if it is due to disease is not normal, and need to be treated in a timely manner.
1. Physiological reasons: mostly seen in athletes, manual laborers, due to the strong reserve capacity of the heart muscle, the heart pumps enough blood, which can lead to a slow heart rate, especially in deep sleep, the heart rate will be relatively slow, 55 times per minute is normal.
2. Pathological causes: coronary heart disease, hypothyroidism, intracranial diseases, patients may appear weakness, dizziness, mental instability and other symptoms, taking choline drugs or beta-blockers and other drugs can also cause bradycardia, this situation needs to be timely medical attention, follow the physician’s advice to take medication for treatment.
Physiological bradycardia does not need to be dealt with, if it is due to disease, you need to go to the hospital and follow the doctor’s advice, to avoid delaying the condition, jeopardizing health.