A lot of body-image issues are related to/centered around femininity. Thus, we have tropes such as Big Breasts, Big Deal, A-Cup Angst, Hollywood Homely/Pudgy/Thin, Fat Girl, and so on. But the same way that thinness and breasts are associated with femininity, muscles are associated with masculinity. Thus, this trope, in which a character angsts about having not enough or too much muscle. There are two versions: