Metabolism is the complex set of life-sustaining chemical reactions in your body’s cells that convert food and drink into energy for essential functions like breathing, growing, and moving, also creating building blocks for cells and eliminating waste. It involves two main processes: catabolism (breaking down nutrients for energy) and anabolism (using energy to build tissues). Your metabolic rate is the speed at which your body burns calories, influenced by age, genetics, muscle mass, and activity levels, and it runs 24/7 to keep you alive and functioning.
