[zozbot234]

If you think you're being routinely physically intimidated to the point of feeling stressed out or even threatened, you should absolutely speak up - those things are horrible and nothing can justify them. But as a professional, your very first reflex when facing such things should be to immediately stand back to regain your physical space, then make it clear to whomever you're confronting that you'll want clear and respectful communication from them and they shouldn't be expecting you to flinch. If this is not enough to make them immediately change their tune, you're in a toxic work environment and should plan on polishing up your resume.