1, lack of exercise: lack of exercise makes the fat on the back unable to move, and then accumulates on the back to form splayed meat.
2, Cushing's syndrome: Cushing's syndrome is a group of syndromes caused by the long-term secretion of excessive cortisol in the adrenal cortex, which can lead to the formation of eight-character meat on the back, usually accompanied by diseases such as full moon face and centripetal obesity.