Many things go wrong when a human spends months alone in a dark cave. Time stills and the body's rhythms go awry. Sleep withers to a few hours a night, and menstruation may come to a halt. Enthralling stories, like that of Spanish climber and cave-dweller Beatrice Flamini's, shed light on what motivates someone to become a cave dweller. Flamini's Life as a Cave Dweller On April 14, Flamini emerged from a cave in the country after spending a record 500 days isolated underground, save for a 'technical problem' that forced her to bivouac for eight days on the surface, in a tent.

https://www.discovermagazine.com/the-sciences/why-cave-dwellers-enjoy-isolation

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