The ultimate defense defense movie commentary movie anyone can easily do

Recently there are many noisy incidents, but as long as you watch this movie, you will find a technique to protect yourself without having to train your body too much. However, doing this as stated in the movie may cause you to get inadvertently, so please do so at your own risk.

Details are as below.
It seems that it can be used in any occasion because its application is tremendously useful.
YouTube - Self Defense


In Japan it may be a little difficult self - defense technique.