The real stuff of life....

The brain uses 20% of all we inhale; the kidney dies rapidly without it. No matter which body system we study, that system runs on, depends on, has many systems to conserve, and dies without  

oxygen.

Combined with glucose it creates the energy each and every cell needs to transcribe and translate DNA into protein, which is all that a cell does. From there we get what we call life.

Every homeostatic mechanism is prioritized to preserve oxygenation. Every organ has several systems to protect itself from oxygen's temporary reduction or loss.  The brain will sacrifice all other organs to get it. Beside it water is a waste product (literally). Glucose is useless without it. A billion people will die within minutes if the oxygen zombies suck it up.

So, make sure you get your oxygen. 

Smokers are chronically starved of it,
drinkers use it unwisely,
the obese waste it.

Sniff it up and enjoy!

Cherchez le O2!