The 10,000-Foot Cliff
Why 10,000 feet is a precise physiological threshold, not an approximation — and what cumulative metabolic debt means for the optic nerve.
While the previous article covered how physical exertion at altitude creates an acute oxygen deficit, living at extreme elevations introduces a completely different physiological mechanism. It is not just about the acute "throughput" of oxygen during a ski trip or a hike; it is about the structural depletion of your cellular energy reservoir over time.
To understand this, we have to look at a hard mathematical limit in human biology.
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