Why do we dream?

Uriel: Your Daily Source of Wisdom

We all know why we sleep, right? It's necessary for the recovery of your body and mind from the previous day's workload--blah blah blah.
But what we don't know is why we dream during our sleep. Is it merely a compilation of random thoughts and images? Or is it a way for our subconscious mind to communicate with us like they do in sci-fi movies? Let's find out in today's episode.