Macros, short for macronutrients, are the nutrients that provide energy and support bodily functions. They are divided into three main categories: carbohydrates, proteins, and fats. Each of these plays a crucial role in maintaining health, with carbohydrates serving as the body's primary energy source, proteins aiding in tissue repair and growth, and fats supporting cell structure and hormone production. In nutrition, tracking macros involves monitoring the intake of these nutrients to achieve specific health or fitness goals. Many people use macro counting to balance their diets, ensuring they consume the right proportions of each nutrient for optimal performance and well-being.