2. The barbell pinches the legs and squats. Carry a barbell with a medium weight on your shoulders, with your legs about shoulder width apart, slowly squat down to full squat (knee angle is less than 90 degrees), then quickly stand upright and clamp your legs. 1 group did 8 ~ 10 times, and * * group did 4~6 times.
3. Kneel down with your legs together. Stand with your feet together, bend over, hold your knees with your hands, and do the action of pushing and clamping inward (don't separate your legs), then do the squat and standing action 1 time, then do the exercises of turning your knees left and right 1 time, and so on. Every 15 times is 1 group, and * * does 3 groups.
4. Exercises the legs with external swing and internal clamp every 15 times 1 group, * * 4 groups.
5. Sit in a chair with a book between your legs, straighten your legs, and put a book with appropriate thickness on the upper part of your ankle (lower part of your calf) for several minutes. When practicing, you can tie a rope at the lower part of the knee joint, which is better.
6. Two people do anti-leg flexion and extension, 8 times is 1 group, and * * * does 4 groups.