Dreams

Dreams are the images and thoughts experienced by a person while sleeping, and usually are not remembered when the person wakes up.

However, a person may remember the dreams he or she has just before waking up. Also, if the dream is frightening, they may wake up in the middle of their sleep.

They are usually associated with rapid eye movement (REM) sleep, when the brain activity resembles that of a person awake.

Though theories abound, there is no proven scientific reason for the dreams.