The person with normal breathing is going to have about 40 s for the body oxygen test. In the case of chronic overbreathing, breath holding time becomes shorter. Sick people have deep and fast breathing 24/7 and reduced body oxygenation (usually about 10-20 s of oxygen in tissues).

Chronic overbreathing causes a variety of symptoms due to dozens of physiological abnormalities created by alveolar hypocapnia (low CO2 in the alveoli of the lungs) in each system of the human body.

Medical science has revealed an alarming fact 80 % of the population is breathing wrong - shallow & inefficient, chest only.