Pleasant thoughts or fantasies you have while awake, often about things you wish would happen or imagine doing.
From Middle English 'day' (meaning during daylight hours) combined with 'dream' (from Old English 'dream' meaning joy or music). The compound emerged in the 1600s to describe waking fantasies, distinguishing them from nighttime dreams.
Daydreams are actually your brain's way of practicing—neuroscientists call it the 'default mode network,' and studies show people who daydream more tend to be more creative and better at problem-solving, which is why many inventors and artists are chronic daydreamers.
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