Sigmund Freud believed that dreams are a window into the unconscious mind, revealing our hidden desires, fears, and conflicts.

REM sleep, also known as Rapid Eye Movement sleep, is the stage of sleep during which most vivid dreams occur.

Daydreaming refers to the experience of having vivid thoughts, images, and fantasies while awake.

Lucid dreaming is a state of consciousness during sleep in which the dreamer is aware that they are dreaming and can control the content of their dream.

Nightmares are vivid and often frightening dreams that can cause distress and disrupt sleep.

Night terrors are intense fear-filled dreams that typically occur during the first few hours of sleep and can cause the dreamer to wake up in a state of panic.

Flying dreams are common dreams in which the dreamer experiences the sensation of flying or floating through the air.

Falling dreams are common dreams in which the dreamer experiences the sensation of falling or being chased.

Out-of-body experiences are dreams in which the dreamer feels as though they have left their physical body and are observing themselves from a different perspective.

Visitation dreams are dreams in which the dreamer interacts with deceased loved ones or other deceased individuals.

Problem-solving dreams are dreams in which the dreamer finds a solution to a problem or comes up with a creative idea.

Flashback dreams are dreams in which the dreamer experiences a past event or memory, often in a vivid and detailed manner.

Precognitive dreams are dreams in which the dreamer experiences a future event or scenario before it actually happens.

Shared dreams are dreams in which two or more people experience the same dream or similar dreams simultaneously.

Inception dreams are dreams in which the dreamer experiences a dream within a dream, creating multiple layers of dreams.