75% of respiratory oxygen in the air is exhaled again unused

Left without food and water, human beings can live for days or even weeks, but they survive only a few minutes, without air. In 24 hours, each person breathes in  resting state about 400 litres of oxygen, considerably more when the body is subject to exertion.

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Human beings are, however, relatively poor at utilising respiratory air. Of the 21% oxygen contained in the respiratory air, the human body is able to use only approx. 25%. 75% is exhaled again unused; this is the reason why mouth-to-mouth resuscitation is possible at all.

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The older or weaken you are, the less oxygen the body is able to utilise 

Ageing, illness, stress, a lack of movement, unhealthy eating habits and environmental pollution further reduce the ability of the body to utilise fully the oxygen that is inhaled, although the oxygen is required every second throughout life for generating energy in each of the more than 60 trillion body cells.

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It is necessary to regulate up to one billion chemical reactions in the cells every second.

The supply or concentration of oxygen itself is not the reason for the bottleneck, rather it is the ability of the body to use the sufficiency of oxygen in the cells. This means that there is little purpose in further increased supply of oxygen

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The solution: Quality instead of quantity

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The solution does not involve increasing the quantity of oxygen supplied to the body, but optimising the utilisation capability of the available oxygen

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This can be exemplified, taking a simple comparison from the realm of technology; a badly regulated combustion engine emits a high level of pollutants as well shaving a lower output and a shorter working life. The additional supply of fuel is not the solution to this problem.

Only an optimally regulated engine increases output, reduces the level of pollutants and guarantees a long working life.

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