Naked mole-rats can survive 18 minutes with no oxygen by switching fuels.
Why this sounds fake
Mammal brains usually need oxygen within minutes, so zero oxygen for eighteen minutes sounds biologically impossible.
A mammal brain without oxygen is supposed to fail fast. Naked mole-rats are a startling exception. In experiments, they tolerated 18 minutes of complete anoxia and recovered without obvious injury. The key finding was metabolic: during oxygen loss, their brains and hearts can use fructose-driven glycolysis, bypassing a step in ordinary glucose metabolism that stalls under low-oxygen stress. They also slow down dramatically, so this is not normal activity without air. Still, the core surprise holds. A mammal can survive zero oxygen for far longer than expected by changing which sugar its vital organs burn.
The animal already looks unreal; the mechanism shows the backup fuel pathway is the deeper trick.
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