Welcome to today’s after reading of the crash course psychology class

Today’s topic is the dream.

Why we should dream every day? In term of Scientific, scientists still don’t have the??? consensus.

Probably, our cells need to rest and our body needs to repair themselves.

An experiment showed，our brain are still working when we sleeping.

When we sleeping most of our body are slumber, bur the brain is still working.

Scientists discovered that dream divide into fore parts.

Rem, nrem1, nrem2, nrem3.

First, when you fall sleep, you brain at the non-rapid eye movement stage

And last will at the full rem sleep. Your eyeballs will go nuts. And in a depth sleeping.