Knee pain after exercise is normal, mainly discomfort caused by overload of ligaments and cartilage of knee joint. To ensure the full rest of the knee joint, we should start with low-intensity and low-frequency events and gradually adapt the knee joint to sports. If your leg has been injured, you should choose swimming. Unless it is a long-term professional training, it is difficult to keep swimming and keep the heart rate above 150, but the impact on the knee joint is much smaller than that on the ground.
Everyone has a different heart rate. The better you are, the lower your heart rate may be, so the less likely you are to reach a higher heart rate. Therefore, the weaker you are, the faster your heart rate will be. Sometimes you can spend 100 easily without exercise. Atrial fibrillation can still cost 200 yuan, so your pursuit is wrong. If you want to show that you have knowledge, culture and science in this digital health, you must really have knowledge, culture and science.
The higher the speed of the heart, the less it can work well. There is little effective cardiac output when atrial fibrillation is reached. And a high heart rate will soon lead to heart disease.
After the same person exercises for a period of time, his heart rate will drop. We all know that athletes' heart rate is very slow, ranging from 30 to 40 to 50. Normal people are 60 to 100, so you must first look at your state, your physical fitness, whether you are weak or strong. Weak people can see your heart rate at a glance, while strong people can't reach some indexes through strenuous exercise.
Generally speaking, when you reach 135, you meet the requirements of exercise. It is not advisable to pursue the improvement of heart rate. The number of heartbeats in a person's life is limited, so accelerating exercise is actually slowing down the heart rate healthily and steadily, so your pursuit is wrong. First, if you exceed the standard, you want to achieve an unsatisfactory state. Second, your heart is more important than your legs, so your pursuit is still putting the cart before the horse. The number of heartbeats is relatively fixed. You jump more and leave early. The more you exercise, the stronger your heart rate will be. So what you want to pursue is to achieve a certain exercise intensity, and the heart rate will not go up much. At the same time, reduce the daily heart rate and make the heart stronger.