....and an interesting read for those who dare not, which is the majority-
http://www.biologyofkundalini.com/

"Ellie Van Winkle suggests emotional repression of the full expression of the fight/flight response and the consequent lack of resolution back to a neutral set point, results in the atrophy and toxicosis in catecholamine-noradrenergic neurons. A toxin is anything that cannot be utilized by the cell, and when elimination is impaired, toxins accumulate to intolerable levels and trigger a detoxification process. This cycle of toxification and detoxification shows up in the form of a mild to extreme disturbance in the emotions and personality.....

....Our brain falls into patterns of cyclic neurotoxicity as a result of emotional repression of the fight/flight mechanism during early trauma, social stress, abandonment or deprivation of needs during in our infancy. Thus the neurotoxicity that is addressed by kundalini awakenings is the repressive mechanism built into our primary wiring (0-5 years development). This initial patterning becomes the template for ongoing emotional repression, and lack of neuron-recouperation, which interferes with the smooth running of our catecholamine "activating" neurons. (The Catecholamine metabolism proceeds from tyrosine, to DOPA, to dopamine to norepinephrine and then to epinephrine.)...

....Babies suppress fight/flight responses when their needs are so unmet that they go into a freeze response. The vegetative unmyelinated vagus controls basic metabolism and responds to stress by "immobilisation behaviours." Domesticated animals including humans are sub-natural when it comes to releasing the tension of both fight/flight and freeze. Also as children under punitive authoritarian rule, when our caretakers and teachers are not truly our "friends," we are encouraged to "lie" by inhibiting the expression of fear, anger, sadness, and so the neurotic, dissociated false self that doesn't know what it feels is built. Kundalini awakenings constitute a mechanism for the ultimate release of this primal repression, allowing our brains to evolve and mature beyond the ongoing cycles of repression/neurotoxicity/detoxification....."