Metabolic describes anything related to metabolism, which is how your body converts food into energy and uses that energy to keep you alive and active.

Think of your body as a complex factory that never stops working. Your metabolic processes are constantly breaking down the sandwich you ate for lunch, turning it into fuel your cells can use. These processes also build new materials your body needs, like muscle tissue after exercise or new skin cells to replace old ones.

Scientists study metabolic rate, which measures how fast your body burns energy. Someone with a fast metabolic rate burns calories quickly, while someone with a slower rate burns them more gradually. Your metabolic rate changes based on many factors: growing kids generally have faster metabolisms than adults, and physical activity speeds up your metabolism temporarily.

Doctors pay attention to metabolic health because problems with metabolism can lead to diseases like diabetes, where the body struggles to process sugar properly. Athletes often talk about their metabolic needs because intense training demands enormous amounts of energy, requiring them to eat more food than less active people.