Metabolic conditioning or "metcon" refers to conditioning exercises intended to increase the storage and delivery of energy for any activity. The first thing that comes to mind for most people when training to improve endurance is conditioning the cardiovascular system to improve transport of blood to the working muscles. Concurrently, metabolic conditioning is conditioning the muscles to better use the fuel delivered to them by improving the efficiency of the different metabolic pathways. While it was once believed that only aerobic conditioning served to increase cardiovascular health, studies have now shown that anaerobic conditioning may also condition the heart to a same level as aerobic training alone. Dr. Izumi Tabata successfully produced excellent improvements in anaerobic and aer