The reason for dreaming
- One theory is that dreaming helps with sleep's memory-processing function. During sleep, the brain sorts through information gathered during the day, then decides what to keep and what connections to make between new information.
- Another theory is that dreams help with emotional processing by removing some emotional associations.
- Dreams may provide a safe way of testing the brain's reactions to negative events.
- Or dreams are just the by-product of a brain starved of external input.
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