Some men have to talk a great deal about the substances their bodies can emit because their bodies can't emit humans and that makes them sad.

Men have no choice about their bodies' inability in this area. They can't lift or run or fight their way around it.

That is part of the reason why some men feel strongly that women should not have a choice in the other direction. "If I'm stuck with what my body can't do, you have to be stuck with what your body can do."