When many people set out to exercise, they do so with the primary goal of losing fat mass. There is much advice floating around about how to optimize or maximize fat loss during exercise; one of the most commonly touted is that of the fat burning zone. Essentially, it is suggested that when performing aerobic exercise (walking, jogging, swimming, etc.) one should work at a fairly low intensity - the fat burning zone - to augment fat oxidation and thus fat loss (pictured above). The fat burning zone target exercise intensity varies from source to source but is approximately 50-60% of your…