‘Then they plunged a great needle into my butt and BAM! out I went for two whole days. When I woke up, wow! Rats all over the floor, wailing and screaming. We ate potatoes with spoons.’ –Edie Sedgwick

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Why do we dream? It’s still a scientific mystery. The “Threat Simulation Theory” proposes that we dream as a way to simulate real-life threats and prepare ourselves for dealing with them. “This simulation in an almost-real experiential world would train the brain to perceive dangers and rapidly face them within the safe condition of sleeping,” write the authors of a new paper that’s put the theory to the test. […]

The researchers contacted thousands of first-year students at the end of the day that they sat a very important exam. […] over 700 of the students agreed to participate and they completed a questionnaire about their dreams and sleep quality the previous evening, and any dreams they’d had about the exam over the course of the university term. […] The more exam dreams a student reported having during the term, the higher their grade tended to be.

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collage { Eugenia Loli }