Fat itself will not be directly excreted, it is mainly through respiration to achieve peroxidative metabolism of triglycerides, and ultimately generate carbon dioxide and water, in the form of sweat and excretion. Fat storage in the human body is mostly in the form of triglycerides, triglycerides themselves will not be directly excreted, it is mainly through respiration to achieve peroxidative metabolism of triglycerides, the metabolic process of fat mobilization to generate glycerol and fatty acids, of which glycerol will be sent to the liver into glucose. The fatty acids that are taken away from the body combine with albumin in the blood and are sent to various cells in the body for oxidation, eventually generating carbon dioxide and water, which are excreted from the body in the form of sweat and feces.