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do not breathe. Controlling, regulating or lengthening of time in breathing will be more appropriate meaning of the word.” .face:
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Inhaling (Purak), exhaling (Rechak) and keeping the breathed air inside (Kumbhaka) are three type of Pranayama. These are of short and long duration ( #:). Patanjali did not mention that the natural duration and frequency should be lengthened and breathed air retained by force. The words "TT", "la", "FLY" are important. Naturally time increases or decreases according to place (situation, exigency) during sitting, standing, running or in face of some danger and according to levels of emotions of anger, vanity, greed, good and bad news etc. What Patanjali prescribes is that yoga practitioner should just observe the natural flow of breath as it is during a given situation and time. Of course a person, a yogi observing Yama and Niyama will have equanimity in varying situations and will not be swayed away by emotions and his breathing will naturally be steady. In sanskrit there are various modes of interpreting the meanings of words. By 'Abhida' mode of interpratation fazo' means stopping. But according to “Lakshna” mode the correct meaning of 'fazog' is not stopping or cessation but experiencing the natural rhythm of breathing. Anything, any activity if forced is unnatural. Forced body activity is prohibited by charak, the great Ayurvedacharya, terming it as "Prajnana Apradha" (Crime against mind and body).
"...co bialainen feysAiga AHUTH... तज्जंवा कर्म यत्किलष्टं यदा तद्देहकर्मच..... UŞITYTET E qad rufe Tu... 11103/"
“Transgressing time in any mental or body act, doing acts wrong and painful for body are crimes against mind and body and are causes for diseases....."
What is important is that the air being breathed in should be clean and unpolluted. If inhaled air is polluted, its forced longer inhaling will do more harm than good. The more harmful is the practice of suspension or retention (Kumbhak) of the inhaled air which in air sacs of lungs is continuously exchanged by polluted air (CO2) in blood capillaries and if retained longer than the concentration of CO2 will be more and more in air sacs and the blood will not get required O2 for its purification.
