Each of the three mechanical aspects of the breath have specific neurotransmissional function. Any technique that emphasizes one aspect of the mechanism exclusively will shift neurometabolism accordingly. Since neurometabolism is a volatile equilibrium, this is not trivial. Yoga practices are designed for this purpose, stimulating a specific aspect or relationship of aspects. I realize that contemporary yogis don't always explain it this way, and I think that also leads to misuse and abuse.
Right knowledge is yoga or union.
That union is from bringing together all aspects, and applying discernment. From A master Rebirther. They were working with an adopted child on some type of dis-attachment or bonding inability. Friend Friend Friend Friend Tell me how to add a referral form to my site. Note the relevant page in the subject line 1998-99 Daniel Morgan White.