PHYSIOLOGY OF PRANAYAMA Koshas
. Annamaya Kosha ( The Physical body )
; Månomaya kosha ( the mental body ) ,
Pranayama kosha ( The pranic body )
; Vijanamaya Kosha ( The Psychic body ) ; -
Anandamaya Kosha ( Bliss body ) > Pranic body made up of the five major pranas ( Prana , Apana , Samana , Udana , Vyana ) > Pranayama influences the pranic centers of the body . It kindles the vital energy that flows to the entire body and illuminates it .

> .. Normal breathing is Shallow breathing . Most people do normal breathing incorrect , because it is a spontaneous function of the body . In normal breathing tidal volume is 250 to 300ml . 150ml remains in dead space . Thus , less than 150ml available for oxygenation . Due to inhalation and exhalation of small volume of air , germs tend to accumulate in lower part of the lungs . Shallow breathing leads to insufficient oxygenation of the body causes functional disturbance and illness . Pranayama is a process of slow and deep breathing . In deep breathing tidal volume is 500ml or more , 350ml is available for oxygenation . Apart from more amount of oxygen delivered , time required to transfer Oxygen from lungs to blood and Carbon dioxide from blood to lungs is more . > This results in more oxygenation and more removal of toxic substances Maintains tissue metabolism and healthy oxygen
.
THE MOST IMPORTANT PART IN PRANAYAMA .
In ideal pranayama ,
Inspiration : Abhyantara Kumbhaka : Expiration : Bahya Kumbhaka
Stage 1 : 1 : 1 : 1 : 1
Stage 2 : 1 : 1 : 2 : 1
Stage 3 : 1 : 2 : 2 : 1
Stage 4 : 1 : 2 : 2 : 2
Stage 5 : 1 : 3 : 2 : 2
Stage 6 : 1 : 4 : 2 : 2

PHYSIOLOGICAL BASIS OF HEALTH IMPROVEMENTS BY PRANAYAMA > Pranayama improves Heart Rate variability ( HRV )
Cardiorespiratory functions Autonomic functions
Metabolic functions
All visceral functions .