the.com/exhaustion
the body's red-line warning, ignored until it stages a full hostile takeover.
means A state of extreme physical or mental fatigue in which one's energy or resources are completely drained.
from From Latin exhaurire, 'to draw out, empty out,' built from ex- ('out') plus haurire ('to draw, drain'). The same root that empties a well empties a person — you are literally bailed dry. English took it up via the past participle exhaustus, and by the 17th century 'exhaustion' described both the draining of physical things and the draining of human strength.
- adenosine buildup
- sleepiness is literal chemical sludge in your brain
- micro-sleeps
- the exhausted brain naps for seconds, eyes open
- deadlier than drink
- 24 hours awake equals legally drunk driving
- immune crash
- fatigue cripples white blood cells fighting infection
- willpower drain
- tired brains make worse, riskier decisions
shackleton's nimrod expedition — 1907-1909 antarctic journey where crew suffered extreme fatigue, frostbite, and malnutrition while sledging 1,260 miles
death valley heat study — 2021 experiment where volunteers in death valley, california (134°f) showed severe dehydration and cognitive decline within hours