Body image disorder, also known as negative body self, is an individual's negative cognition of the body, negative emotional experience and corresponding behavior regulation. It includes stereotyped, emotional and overemphasized evaluation of information such as weight, figure and food.
According to the above definition, which of the following does not belong to body image disorder?
Before going out every day, Zhang Gui laments in front of the mirror why he doesn't gain weight for a long time