Heart rate is generally the heart rate in the resting state, and exercise heart rate is the heart rate in the exercise state, which is related to the exercise state of the person. Exercise heart rate reaches a certain level in order to play a role in exercising the heart muscle. At present, the common international way to calculate the exercise heart rate is 222 minus age, and reaching 65%-80% in the exercise state is more appropriate and effective. The heart rate of a normal adult in the exercise state is related to the individual’s physique, and there are different requirements for the heart rate of different intensities of exercise, but the general situation does not exceed the upper limit value. The simplest algorithm for heart rate in a normal human heart without disease is to use 170 minus age. The pathological state can use the heart rate in the morning resting state, the heart rate when waking up in the early morning multiplied by 1.8 is the maximum upper limit, and the lowest heart rate can be the heart rate in the early morning resting state multiplied by 1.4.