What Happens to YOUR Body in the 4 Minutes Between Sleep Stages

Why does an Ambien-induced night leave you groggier than a real one? What are sleep spindles, and why do they make the difference between remembering and forgetting? How does the brain physically shrink during deep sleep — and what does it use that opened space for? Feynman Insight explores the hidden science behind the mind, body, health, sleep, habits, and human behavior. We break down complex ideas into clear, engaging videos that help you think better, live smarter, and understand how your body and brain really work. New videos on science, psychology, biology, and deep insights every week #Freynmanmindset #freynmanmethod #physicsexplained #theoreticalphysics