We dream to rehearse

We dream to rehearse.Dreams involving dangerous and threatening situations are very common,and the primitive instinct
rehearsal theory holds that the content of a dream
is significant to its purpose.Whether it's an anxiety-filled night of
being chased through the woods by a bear or fighting off a ninja in a dark alley,these dreams allow you to practice your fight or flight instincts and keep them sharp and dependable in case you'll need them in real life.But it doesn't always have to be unpleasant.
For instance, dreams about your attractive neighbor could actually give your reproductive instinct some practice, too.