Do weird dreams help train us for the unexpected?

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The mystery of why we dream has been deliberated for decades. Catherine Loveday, professor of cognitive neuroscience at the University of Westminster, explores a new theory called the ‘overfitted brain hypothesis’. Unlike previous theories, it may help explain the bizarre content of our dreams. (Image: Concept of time with woman in forest surrounded by big clocks, Credit: mikkelwilliam/Getty Images.)