metabolic demand

Metabolic demand refers to the amount of energy your body needs to perform its basic functions, such as breathing, circulating blood, and maintaining body temperature. It varies depending on activity level, age, and health. When you move or exert yourself, your muscles require more energy, increasing the metabolic demand. Your body responds by increasing blood flow and oxygen delivery to meet this energy need. Essentially, metabolic demand is a measure of how much energy your body needs at any given moment to keep you alive and functioning properly.