#WeekendFitnessGoals - Anaerobic vs Aerobic Metabolism- What is the difference? Your body uses two types of metabolism during exercise to provide your muscles with fuel. Knowing the difference can help you tailor your exercise to help you reach your goals. Anaerobic metabolism creates energy through combustion of carbohydrates in the absence of oxygen while aerobic metabolism creates energy through carbohydrates, amino acids and fats with oxygen. Your body switches between both during sports