How does the cardiovascular system produce energy?

The cardiovascular system does not produce any energy. You should think of you cardiovascular system as more of a delivery system. Now, your organs and your body work together to break down the foods that you eat and extract the nutrients. read more

The cardiovascular system has to provide oxygenated blood to the body at a rate sufficient to meet energy requirements. Your cardiovascular system provides your cells with the oxygen and nutrients they need to generate energy and with the building blocks they need to make larger molecules. read more

Your circulatory system carries fats throughout your body so it's available to your cells, which can absorb the fat and convert it to energy. The fat in your bloodstream is especially important for long-lasting energy during exercise because it's used in combination with carbohydrates to power your muscles. read more