A brisk walk is obviously different from a walk or a slow walk. Walking within 3 kilometers per hour is called slow walking, 3.6 kilometers is called slow walking, 4.5 kilometers is called natural walking, and 5.5 kilometers is called fast walking (also called race walking). Accordingly, a brisk walk of 10 minutes should be about one kilometer (the old, the weak, the sick and the disabled can be a little slower), that is, you should walk about 120 to 140 steps per minute. In this way, the heart rate can reach 70% of the maximum heart rate (170 minus age) and meet the requirements of moderate and small exercise intensity, so as to stimulate the heart and lungs well and achieve the due fitness effect.