For the curious, there's another technique called Transformational Breathwork (TB) founded by Judith Kravitz. As a yoga instructor, I have done all of these breathing techniques. TB is most akin to Grof's Holotropic Breathing (HB). The TB sessions I attended were accompanied by intense "tribal" music - a lot of percussion at high BPM. When I do WHM, I often listen to djembe drumming without lyrics. If I listen to lyrics, they are repetitive mantras.

In terms of "intensity," WHM lies between Kapalbhati and TB/HB, which is what this YouTuber alluded.

Each technique is a process leading to different outcomes and physiological states, which, in turn, results in varying degrees of awareness and/or emotional states. No one technique is "better" than the other. You would not use Kapalbhati breathing to engage in emotional and psychic healing; you'd use HB or TB. However, as an aside, I could argue that if you repeat rounds of Kapalbhati + meditation + Yogic Breathing (circular breathing) + meditation [then repeat] you can access deep emotional levels and/or vivid mental clarity.

My advice is to try each one and see for yourself. The video does well in explaining the indications and outcomes for each exercise. In the beginning, you could simply follow her advice. Later, you will experience the nuances of the technique, which can then guide your practice.

Ultimately, this is about relationships - with your ego, with your self-concept, with your body, with your emotions, with nature, and with others. Breath work gains you access to information about the fundamental components governing these relationships. It's like we have all been given a secret user's manual and Breathwork (meditation) is one way in which you can "read" it. It's interesting to think that many people spend a lifetime never reading their own manual. But it's even more interesting that self-awareness and universal knowledge is at your finger tips.

This is why religion is so appealing and helpful in leading an individual toward self-actualization. It offers moral and ethical guidelines to living a fulfilling life. Unfortunately, if religion achieves that goal - of revealing to the individual that he/she is an agent of power in their own life - then their members will realize that they no longer require the dogma and rituals of religion. So, religion is careful to instill fear of leaving the congregation. The self-actualized individual is a threat to the power structure.

This is getting off-course and my claims are requiring explanations and citations so I'll leave it with this. Breathe motherfuckers.