This video explains how real changework functions - some ((Nervous - Brain|insular cortex)) pictures are included!
[https://www.youtube.com/watch?v=YficBlvPwWQ]

Conscious reconnection with our autonomous Nervous system and getting back control over our immune system, by getting into a highly sympathetic state at will and without conflict! I'm very excited about methods like his, as well as the Buteyko method, because they show ways out of stress and into resilience. Like Dr Kwesi  spoke on the Convention - (most of our) stress is a disfunction of the brain...

Interesting as well from META-Health perspective: Wim Hof discovered this method in great distress after the suicide of his wife.
*Physical and emotional desensitization happens by a "cerebellum constellation" under overwhelming attack from all sides. 
*Devoted to something "bigger than oneself" and being fearless fits the description of the "((Endocrine - Pituitary Gland - Posterior Lobe|postmortal constellation))", having lost everything that matters.
*Intercostal ((Musculoskeletal - Skeletal Muscles|muscles)) overfunction like shown here, is possible after self-devaluation of not being able to protect one's heart or breathing space. Both-sided can create "megalomania" or self-motivation constellation.
*Adrenaline is created in profusion, which matches the active phase of stress management by the ((Endocrine - Adrenal Gland - Medulla|adrenal medulla))

The FMRI scan shows decreased activity in parts of the insula referring to the ((Circulatory - Coronary Arteries (Intima)|coronaries)), ((Respiratory - Larynx - Muscle|laryngeal)) and ((Respiratory - Bronchial Mucosa and Muscle|bronchial)) areas:
{img fileId="2113" thumb="box"}
Simultaneously, overfunction in the periaqueductal grey area in the midbrain, referring to pain modulation (like the cerebellum constellation named above) and ((Organ Walls - Smooth Muscle Layer|smooth muscle)) activity, which could be interpreted as reactions in ((Circulatory - Arteries|arterial)) muscle or ((Musculoskeletal - Muscle Fascia|muscle fascia)) 
{img fileId="2114" thumb="box"}
By the combination/constellation of these, opioids and endocannabinoids are released which produce the feeling of power and invincibility.

The scientific view is documented in this [https://www.sciencedirect.com/science/article/pii/S1053811918300673|study] from Wayne State University.

The training method is described [https://highexistence.com/the-wim-hof-method-revealed-how-to-consciously-control-your-immune-system/|here] in detail