There are several theories about why we dream: 1) Dreams process information during sleep as a byproduct. 2) Dreams represent unconscious desires. 3) Dreams interpret brain signals during sleep. 4) External stimuli can influence dreams. To interpret dreams, one must examine the dream's objects, figures, actions, setting, characters, interactions, and outcome. Recurring dreams often reflect an unresolved issue or life transition and can highlight fears or weaknesses. Common dream symbols like falling, being chased, and death can represent insecurity, avoidance, loss of control, new beginnings, and more.