In normal adults, under quiet conditions, the number of heartbeats generally ranges from 60 to 100 beats per minute, tachycardia and bradycardia can be seen in physiological and pathological factors. Clinical “heart rate” index refers to the number of heartbeats per minute, normal people in quiet, awake heart rate range is generally in the 60 ~ 100 beats / min, the elderly, athletes heart rate will be slower, women a little faster, children faster, <3 years old more than 100 beats / min. Adults with a heart rate greater than 100 beats/minute are called tachycardic, which can be seen in physiological factors such as after strenuous exercise, after drinking coffee and strong tea, and in anxiety, as well as in pathological factors such as heart failure, paroxysmal supraventricular tachycardia, and atrial fibrillation. A heart rate of less than 60 beats per minute is called bradycardia, which can be seen in physiological conditions such as athletes and during sleep, as well as in pathological conditions such as atrioventricular block. If you feel repeated heartbeat discomfort, with wheezing, chest tightness and other manifestations, especially middle-aged and elderly people, you should promptly go to the cardiovascular department of the hospital, improve the relevant examination, to exclude heart-related diseases.