Surely we can switch off for a little while like a half hour and be fine why does everything just immediately fail if we don’t get oxygen? It’s such a design flaw. What is it actually doing to me that is so necessary I need it constantly?
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> What is it actually doing to me that is so necessary I need it constantly?
We don’t. What we *do* need to do is constantly get rid of carbon dioxide. If our bodies made no CO2 from metabolic processes we could survive on a single breath of air every 3 minutes.
The problem is that we don’t have any way to directly pump out this carbon dioxide. We instead need to displace it with something else (oxygen) which is why we breathe continuously.
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