A heart rate of about 90 to 100 beats per minute is within the normal range and usually does not require medication. Clinically normal adults in a quiet state, the normal range of heart rate is 60 ~ 100 beats / min. When the heart rate <60 beats / min belongs to bradycardia, and >100 beats / min belongs to tachycardia. The heart rate usually fluctuates with age, gender and different physiological states. For example, the heart rate of newborns is relatively fast and slows down with age, approaching adult levels during adolescence. Adult women’s heart rate is slightly faster than men’s, while people who do physical labor or exercise usually have a slower heart rate. The same person’s heart rate is also slower when he or she is quiet or asleep, but it increases during exercise and when he or she is excited. If your heart rate is abnormal, you should consult a doctor to determine the cause of your heart rate and treat the problem.