Running heart rate at 180 beats per minute is the limit heart rate of people around 40 years old, so when the age of people above 40 years old need to pay attention to running heart rate above 180 beats per minute is life-threatening, and for people under 40 years old also belongs to the high range. The normal heart rate of adults is 220-age limit, the usual exercise heart rate to maintain the highest heart rate of 60%-80%. Such as 30-year-old adults, running heart rate can be maintained at 114-152 times / min, while the heart rate of 180 times / min or more already belongs to the high range, so it is recommended to reduce the intensity of exercise. The usual exercise and fitness should not be too strenuous, need to be gradual, so that the body gradually used to. For healthy and fit people, it is recommended that the aerobic heart rate can be controlled at 120-180 beats/min, and gradually transition from walking to running to achieve a better exercise effect.