The document summarizes research on how the brain works and applies to learning. It discusses that the brain consists mainly of water, uses a lot of energy, and has circadian rhythms. It develops greatly during childhood and adolescence through pruning and growth of connections. Sleep is important for memory consolidation and "cleaning" the brain. Providing an enriched learning environment promotes brain growth. Stress and boredom hinder learning while humor, music, and exercise can boost it. Food and hydration also impact brain function and cognition.