Fat loss starts when the body burns stubborn fat and converts it into usable energy. It, in turn, causes fat cells or adipocytes to shrink. The lymphatic system helps dispose of Destroyed fat cell membranes as the fat gets discharged between the cells. With the help of some Biochemical steps and enzymes, the fat converts into protein. It further converts into free glycerol and fatty acids before it completely breaks down to a single triglyceride molecule for metabolism in the liver and eventual excretion from the body after decay.