Zombie demonstrates 5 cycles of the Alternate Nostril Breathing technique.
There are many benefits to using this technique and learning it adds to your repertoire of tools to use to become a better human.
Like with anything new you learn, do it with your own discretion. You know yourself more than anyone else does so you will know if this is something that may work for you or not.
This video is just a guide to teach you how to do the breathing exercise. Go at your own pace and do it as long as you feel you want to. Experiment for yourself with an open mind.