Pranayam[respiratory control] & good health

It is well said in english that if wealth is lost, nothing is lost, if health is lost, something is lost and if character is lost, everything is lost. I venture making little correction to this proverb by saying that if health is lost, everything is lost because, a sicky person, having lot many problems in his body, always have negative thoughts and good character can only be achieved by positive attitude/thoughts. Lets now see, how respiratory control i.e. प्राणायाम helps maintaining good health.

We all know that oxidation process take place in our lungs with our every inhalation
Whereby oxygen is absorbed and supplied to the whole body via nerves [ नाडी] and
Carbon dioxide thrown out with every exhalation..

In this fast era, I think man has forgotten how to respire as gifted by nature. You just observe a small child up to the age of 6 months respiring, you will find that his stomach
Comes up while inhalation and goes down while exhalation. That is the correct system of respiration. Majority of people, do not inhale to the maximum capacity of their lungs and exhale completely resulting into following problems:-

1. By not breathing in to the fullest capacity of lungs, capacity of lungs keep reducing
and an aging process starts early.

2. By not breathing out completely, some percentage of carbon dioxide remain in lungs and block small holes connected to nerves, supplying oxygen to body.

3. Fast inhalation followed by immediate exhalation, by not giving sufficient time for oxidation process, one exhales out maximum oxygen itself, resulting into body not getting required quantity of oxygen.