They are wrong and dangerous takes on Pranayama. I saw a video of Wim Hof demonstrating his technique and the violence of the technique elicited a immediate no-no from me who studies this (and related) subjects.
People should get some popular books on Pranayama and then also get the original books so that they can see what the original text actually says. Follow all the cautions mentioned before starting the practice, do everything gently and proceed slowly. If you do it properly, you will see immediate results in terms of self-feeling within a week. You will also see external signs like clear skin, whites of the eyes becoming clearer, gait/body becoming lighter etc. They are all mentioned in the texts which indicate to the student that he is doing the practice correctly.
They are wrong and dangerous takes on Pranayama. I saw a video of Wim Hof demonstrating his technique and the violence of the technique elicited a immediate no-no from me who studies this (and related) subjects.
People should get some popular books on Pranayama and then also get the original books so that they can see what the original text actually says. Follow all the cautions mentioned before starting the practice, do everything gently and proceed slowly. If you do it properly, you will see immediate results in terms of self-feeling within a week. You will also see external signs like clear skin, whites of the eyes becoming clearer, gait/body becoming lighter etc. They are all mentioned in the texts which indicate to the student that he is doing the practice correctly.
For example, here is a Tibetan Yogi demonstrating a specific type of exercise+pranayama. It is dynamic but not violent - https://www.youtube.com/watch?v=BESrdlf-cPg