Dreams are one way the brain processes information and memories. During sleep, the brain reviews and organizes information from the day. Dreams may also be a way for the brain to sort out problems or stresses.
Some scientists believe that dreams are a way for the brain to create new pathways, as well as working out old ones. This is why dreams can sometimes feel so strange – they’re mixing things together that wouldn’t normally go together in our everyday lives. Dreams might also be a way for us to process emotions that we didn’t have time for during the day.