The crux of Butler's argument in "Gender Trouble" is that the coherence of the categories of sex, gender, and sexuality—the natural-seeming coherence, for example, of masculine gender and heterosexual desire in male bodies—is culturally constructed through the repetition of stylized acts in time. Although the repeated, stylized bodily acts establish the appearance of an essential, ontological "core" gender, Butler understands gender, along with sex and sexuality, to be performative. Butler explicitly challenges biological accounts of binary sex. The performance of gender is not voluntary, in Butler's opinion, and they believe the gendered, sexed, desiring subject must be constructed within what they call, borrowing from Foucault's "Discipline and Punish", "regulative discourses." These, also called "frameworks of intelligibility" or "disciplinary regimes," determine in advance what possibilities of sex, gender, and sexuality are socially permitted to appear as coherent or "natural". Regulative discourse includes disciplinary techniques that coerce the stylized actions and thereby maintain the appearance of "core" gender, sex and sexuality.