What is cellular respiration, and why can life not exist without it? Every breath you take, every thought you form, and every movement you make is powered by this microscopic process happening inside your cells right now. In this video, we break down cellular respiration in a clear and engaging way, explaining how cells convert food into energy through glycolysis, the Krebs cycle, and the electron transport chain. You’ll discover the role of mitochondria, why oxygen is so important, and what happens when cells produce energy without it. Whether you’re a student, a science enthusiast, or just curious about how your body really works, this video will help you understand one of the most fundamental processes of biology. Cellular respiration is not just a textbook concept—it’s the reason life keeps going.