1. Keep warm to prevent excessive fatigue, and do more warm-up exercises before exercise. Avoid inducing factors, such as overweight, improper exercise, injury, etc. 2. Do proper knee flexion and extension activities, do more static muscle tension exercises of lower limb muscles, and strengthen quadriceps exercise. 3. Regular physical examination, obese people should lose weight.

Diet regulation

1. It is advisable to eat more high-protein and nutritious foods, properly supplement foods rich in vitamins and minerals, and eat more antioxidant foods with high calcium content, such as milk, dairy products, shrimp skin, kelp, sesame paste, bean products, papaya, melon, grapes, oranges, etc. 2. Avoid eating greasy, fried, smoked, barbecued, cold and irritating foods; Avoid eating foods high in salt and fat.