The heart rhythm of young people is sinus rhythm, and a heart rate of 60-100 beats/min is normal. If the heart rate exceeds 100 beats/min it is considered sinus tachycardia and a heart rate below 60 beats/min is considered sinus bradycardia. In general, women have faster heart rhythms than men. Younger patients should pay attention to self-measurement of heart rate, and most of them maintain a heart rate between 60-80 beats/min. as the best. If the heart rate in a quiet state exceeds 80 beats/min, it belongs to a certain degree of slightly too fast heartbeat. It is recommended to improve the cardiopulmonary function through appropriate physical exercise and to reduce the sensitivity of the autonomic nerves. In ordinary life should also pay attention to emotional relaxation, not due to excessive emotional tension resulting in an increase in heart rate.