A simple and effective method to correct O-leg, but it needs some perseverance. It will take longer when you get older, but it will definitely be useful. This is what I used to correct the athlete's O-leg.
1 Stand up straight, chest out (it is best to stand against the wall), put a slightly thicker book (half smaller than O-type) at the knee joints of both legs (dictionary if O-type is very harmful), keep your legs straight without lowering your head, and stand for 10- 15 minutes (if you really can't hold on, 5 minutes will do).
2 The same posture, but gradually make the book thinner and thinner, and finally ask for a newspaper.
3 continue to insist on it for a while.
Pay attention to your hips when standing, and pay attention to your knees touching your knees when walking.
Give it a try! Good luck agreeing with 0| comments.