Leszek Kucharski teaches stretching

The form of the people in the videos is pretty bad. Like the guy nearest the camera on the right side keeps turning his feet out which means he is avoiding a good part of what the stretch is intended to do. Also, those bouncing movements while near end range of movement are pretty bad for you.

In the one where the knees are out and the feet are together, the way they are grabbing the outer edge of their shoes and pulling the front of their feet up, THAT IS TERRIBLE FOR YOUR KNEES. That is at 3:41.



What this guy in the screen shot is doing, eventually that is going to be torn cartilage in the knee (torn menisci). To do that to your foot with your knee bent, you have to be twisting both your knee and your ankle. Forgive me. But this is almost like a video of what NOT to do.

Actions in this pose that would bring you a more effective stretch would be: a) to move the knees out and down towards the ground; that would deepen the stretch in the inner thighs; b) to move the chest forward and down, closer to the feet: that would deepen the stretch in the inner thighs and lower back. But all pulling the feet away from the ground does is damage the knees. Twisting ankles is not so great for you either but your ankle can handle more rotation than your knee can so that is much more dangerous for your knees.