The cardiovascular system operates our body by distributing and circulating blood to parts of our body. The blood in our body contains red and white blood cells, plasma, and platelets. Those are then distributed through the body to the pulmonary circulation. The human heart is the engine of the pulmonary circulation (Farley,2012). Blood is then delivered to our heart. Waste from the cells of our body is removed and blood is distributed to our vines (Farley, 2012). Therefore when we engage in cardiovascular fitness our muscles demand an increase of blood supply. Blood then should be distributed to those areas. The muscles then use that oxygen. Therefore when cardiovascular fitness is used we are supplying oxygen and energy to our body. The
