Metabolism is the sum of all the chemical reactions in your body. Your body is constantly breaking down and building compounds, a process that creates and uses energy, and sustains life. Metabolism refers to cellular reactions that give your body energy. Learn more about how metabolism works and how to improve your metabolic rate. Metabolism consists of a series of reactions that occur within cells of living organisms to sustain life. The process of metabolism involves many interconnected cellular pathways to ultimately provide cells with the energy required to carry out ... Metabolism refers to the whole sum of reactions that occur throughout the body within each cell and that provide the body with energy. This energy gets used for vital processes and the synthesis of new organic material. Every living organism uses its environment to survive by taking nutrients and substances as building blocks for movement, growth, development, and reproduction. All of these are mediated by enzymes, which are proteins with specialized functions in anabolism and catabolism ...