If you are a novice in fitness, I suggest you exercise again under the guidance of a professional. There will always be some unscientific movements and intensity when practicing by yourself, which will cause discomfort in the knee joint.

If you exercise regularly, don't neglect stretching, stretching and other preparatory activities before and after exercise just because you feel that your physical condition is ok, so as to avoid joint injury caused by a lot of exercise.

You can usually eat some nutrients rich in amino sugar, and the money for your own use is Jianliduo amino sugar chondroitin calcium tablets. Amino sugar, chondroitin, calcium carbonate, CPP and Rhizoma Drynariae are rich in nutrition. Adequate supplementation can help repair damaged chondrocytes, promote cell regeneration and lubricate joints, thus reducing the damage caused by wear and tear.

These are my personal suggestions, and you can refer to them as appropriate.