Dreams

      In physical functioning, consciousness works in three levels simultaneously. Sensual perception is the peripheral or material consciousness. In this conscious level, you need effort. When there is no effort, you go to the subconscious level. The last level is the super conscious. When you go this level, you are able to understand many secrets of Nature. When you sleep, the conscious mind stops. The subconscious mind does not always stop; that is the reason you dream during sleep. According to food, some tension or emotional moods many disturb the brain cells. So in sleep such disturbance cause dreams.

-Vethathiri Maharishi