How do dreams work?

1sleep cycle

Every night you cycle through stages of sleep, and dreams happen mostly during one special stage called REM.

2REM stage

REM stands for rapid eye movement — your eyes dart around under closed lids while your brain lights up almost like it's awake.

3amygdala fires

Inside the brain, the emotional center called the amygdala fires strongly, feeding vivid images and feelings into your dream.

4logic dims

Meanwhile the logical planning region, the prefrontal cortex, quiets down — that's why dreams feel strange, jumbled, and rules don't apply.

5memory replay

At the same time, the brain replays the day's memories, sorting what to keep — sewing them into these strange, dreamlike stories.

6the mix

So a dream is your brain's own light show — strong emotion, weak logic, and old memories all mixed live while your body rests.