. What is MetCon and Should You Be Doing It ? . To understand metabolic conditioning you have to understand a few things about how the body works. . In short your body relies on three energy systems. . Phosphagen System: Fast acting and responsible for quick high intensity exercises like sprints and Olympic lifts. This system is depleted very quickly and needs time to be fully restored. . Glycotic System: Once you push pass 10 seconds this system supplies the cells with energy (ATP) for activities like heavy weight lifting and running fast for a few minutes. . Oxidative System: This system relies heavily on oxygen and can supply energy for much longer but not as fast. . So What Is Metabolic Conditioning ? . Metabolic Conditioning is any form of exercise that increases the efficiency of ANY energy system. . It is important to choose the correct metabolic conditioning program based on your chosen goal. . So which energy system are you trying to improve ?