It is normal for the heart rate to remain at 100 beats/minute one hour after running. A normal person’s resting heart rate is between 60-100 beats/min. During and after exercise, the body will increase the heart rate to ensure the blood supply of the body, but there is an upper limit to this heart rate, and exceeding this upper limit will lead to a decrease in blood supply. The heart rate may increase after exercise due to emotional reasons, but as long as there are no uncomfortable symptoms, the heart rate can be rested and return to normal; if the high heart rate after exercise leads to obvious discomfort, you can go to the regular hospital for cardiac ultrasound, dynamic electrocardiogram and other examinations to observe whether there are structural or organic changes in the heart. A heart rate of 100 beats/minute or more one hour after running does not indicate a physical problem, as long as the body does not find discomfort, rest can be restored.