1. Eight-step correction method. Take a step back, pay attention to your heels first, and walk straight. Take eight steps at a time.

2. The method of exercising the inner muscles of the leg: the feet are shoulder-width apart, the feet are slightly flexed, and the knees are bent to do squats and stand up. Do 2 ~ 4 groups every day, 20 times in a group. You don't need to squat completely.

3. Correct the direction of the femur. Lie flat, with your feet bent, your calves and thighs at a 45-degree angle, and your hips raised so that your upper body and thighs are on the same plane.