Dreams are generally referred to as images, stories, thoughts, and emotions that occur while sleeping. Visual imagery is said to be the most common type of imagery. But all our senses can be constituted in our dreams. As people are different, the pattern of dreams also differs according to person. Some dream in color while others dream in black and white. Blind persons experience more dream elements relating to sound, taste, and smell. Dreams have the ability to make you feel happy, amused, scary, or completely odd. They can be perplexing or entirely sensible. Even if we don’t recall it the next day, we all dream. However, studies tell that it is during REM (rapid eye movement) sleep, we have the most vivid dreams. It is the time when our brain is most active. According to sleep specialists, we dream four to six times per night. Why do we dream? There are several debates on the purpose of our dream. We have different theories on it and some of them are as follows: For memory buil...