Dreams are biological byproducts of the REM (Rapid Eye Movement) cycle. Neuroscientifically, the brain’s amygdala fires intensely while the prefrontal cortex—the seat of logic—remains dormant. This imbalance explains why dreams are emotionally vivid yet logically bizarre. This stage is crucial for neuroplasticity and memory consolidation, acting as a "nightly cleanup" to process information. Understanding this biological engine moves interpretation from mysticism to evidence-based mental wellness.