This is a breathing technic I developed after watching the movie "Matrix". In the above scene, Neo breathes inside the Matrix and makes the corridor expand.
It is easy to learn. Here are the 6 steps
Preferably you'll find yourself in nature, in a quiet place. Leave your smartphone at home or at least put it into flight mode
You will experience, with a little practice, that this breathing technic will make your energy expand and will put you in a state of calm confidence and security