Traveling and hiking often involve climbing mountains. Living in high places has excellent scenery, breathing fresh air and exercising. There are many benefits. But here is a reminder to friends who are in poor health. If you are too excited and climb too fast regardless of your physical strength, it will cause tachycardia, which is not good for your health, especially for people with poor cardiovascular and cerebrovascular functions, which may be dangerous. Therefore, when these people climb mountains, they should pay more attention to their pulse. The method is simple. When the heartbeat is slightly faster, touch your wrist 15 seconds, and then multiply the pulse number by 4. No matter how old people are, as long as the pulse rate per minute is within the range of (220- age) ×60%-(220- age) ×85%, mountain climbing is effective and safe. If it exceeds 85% of the maximum heart rate, it is necessary to slow down the climbing speed appropriately, and take a deep breath, relax and tidy up until the heart rate returns to normal. In addition, mountain climbing, as a fitness exercise, can also achieve different goals in different ways. For example, if you want to increase your endurance, you can use small strides, medium speed and deep breathing; If you want to strengthen your legs and feet, you can take a big step, a medium speed, an intermittent upward, walk for a while, make a slight adjustment, and then walk for a while; If you want to practice speed, especially for young people, you can use the method of medium stride, high frequency and intermittent running, that is, running for a while, walking for a while, running for a while and walking for a while. In some areas with relatively gentle slopes, or areas with stepped handrails, you can also try to go down the mountain backwards. This is good for people's balance and coordination. But this kind of sport is more dangerous, so it's better for someone to watch it. Be careful not to hang on steep terrain. (