Dream Theory explores the purpose and meaning of dreams, suggesting they may serve various functions, such as processing emotions, consolidating memories, or problem-solving. Researchers like Sigmund Freud proposed that dreams reveal unconscious desires, while others, like Carl Jung, believed they reflect personal and collective experiences. Modern theories often focus on the brain's activity during sleep, particularly in the REM (Rapid Eye Movement) stage, where most vivid dreams occur. Studies indicate that dreaming may help with emotional regulation and cognitive functions, providing insights into our waking lives and enhancing creativity.