Affirmative consent
Since consent can be withdrawn any time without notice in an affirmative consent jurisdiction a man who has sex with a woman can never be sure whether the women has withdrawn consent or not since she need only do so in her mind. There is no requirement for her to notify him of her change of decision. For this reason affirmative consent cannot work and men are encouraged to avoid sex with women when affirmative consent laws or regulations are in force.
The legislations drafting these laws often do not understand the ramifications. Some of them have admitted this.
The risks for men inherent in affirmative (and enthusiastic) consent laws cannot be understated.
It is notable that all public discussion on affirmative and enthusiastic consent have completely ignore men's consent, and just presumed that men always consex to sex.