If you want to normalize your heart rate, you need to take appropriate measures according to the cause, and the common causes are physiological, hypothyroidism, coronary heart disease, and so on. 1. Physiological: Excessive exercise, aging and other physiological factors can cause a decrease in heart rate, pay attention to reasonable control of exercise intensity, balanced diet can be, do not need special treatment. 2. Hypothyroidism: Hypothyroidism is also known as hypothyroidism, hypothyroidism patients’ thyroxine secretion will be lower than that of healthy people, resulting in the human body being in a low metabolic level of the state, which makes the heart rate slower, clinically, according to the doctor’s orders to use thyroid tablets and other methods of treatment. 3. Coronary heart disease: coronary artery in patients with coronary heart disease is often due to atherosclerosis and lead to narrowing, so that the myocardium is ischemia and hypoxia, generally need to use aspirin and other drugs under the guidance of a physician for treatment. Low heart rate may also have other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.