योगश्चित्तवृत्तिनिरोधः ॥२॥
yogaś-citta-vṛtti-nirodhaḥ 2
When you are in a state of yoga, all misconceptions (vrittis) that can exist in the mutable aspect of human beings (chitta) disappear. 2
My Comments:
Everyone reaches this movement in their "ah" movement of focus and concentration, where their breath stops for a movement - in their creative movements of painting, poetry, meditation, singing, etc. One also reaches that state in Deep Sleep State, called Turiya.
Breath asserts the Mind, and Mind asserts the Body's Metabology, and Body's Metabology asserts the Breath. The example is that of a charioter controlling the two steeds, and the two steeds controlling the Charioteer. Here the Body and the Breath are the two steeds and the Mind is the Charioteer.
There is state in Yoga called Kevla Kumbha, and Nirvikalpa Samadhi - it is the cessation of the breath. Not the Pranic Breath but the Oxygen Breath, and Prana's are more subtler than Oxygen and contribute to the Oxygen stuff.
I have reached Kevla Kumbha state for many years - almost since 10 years but it became better over the years. Sometimes it is easy and somtimes hard. My record time is 3 hours in Shanti Om, and 2 hours in some James' Bond or Bourne movie. Inbetween the Yoga Asanas, one also can do micro meditations and reach Kevla Kumbha. And in Shav Asan, this is what suppose to happen - you go into a powerful deep sleep state but it is not a Tamasic or Lazy Inductive state.
Lying down on stomach with breath full, and not letting your lungs collapse, I can do this for long. Sometimes in good sessions, I have also gone to deep sleep state. But one can do this in Sitting Position, with Air Locks in mouth, and no movement of diaphram, costal muscles, inter clavical muscles, thoriac muscles, and nasal muscles.
What I have found, that I also produce Nitric Oxide based gases, and sometimes towards pure Nitrogen and sometimes towards Sulphide, if I have overeaten, and the NO I have found helps cure my Auto Immune and High BP (there are other techniques also which I would discuss later). There seems to be some connection between Mind-Kidneys/Adrelanin Gland - Liver/Alminantary Canal - and Breath Axis.
NO is an important cellular messenger molecule involved in many physiological and pathological processes. Low levels of NO production are important in protecting an organ such as the liver from ischemic damage. Chronic expression of NO is associated with various carcinomas and inflammatory conditions including juvenile diabetes, multiple sclerosis, arthritis and ulcerative colitis. NO also dilates blood vessels and acts a Neuro Transmitter.