Dreams, the thing you think you know about… but if someone asked you to define the term dream, what would you say...? Dreams are a phase of consciousness including emotional and sensory situations. Dreams are something we have very little to no control over and they often contain things like people we know, memories, or fears.
Dreams happen in a phase of sleep called REM (rapid eye movement). This is important because there are 4 stages of sleep.These stages go in order like this. First, you are in a light sleep when you can be awakened easily. Then your eye movement stops and your muscle activity slows. Your brain waves grow slower. The third stage consists of extremely slow brain waves and is considered to be deep sleep or delta sleep. The final stage of your sleep is REM. During REM your eye movement is very quick and your breathing is shallow. Your heart rate is faster and your blood pressure rises. When you’re in REM your limbs become temporarily paralyzed, incapable of movement. Many people have 3-5 intervals of REM a night.
Have you ever dreamt of something you did the day before? That’s called dream-lag effect, when you dream of something or someone you have seen or done recently. If you went to the store and saw someone you go to school with, and you talk, you might dream about that person.