Ladies, you may think you're clued up about your body, but there are some things your biology lessons probably didn't cover.
Like did you know consuming more sugar will make you more prone to yeast infections? And are you aware of the best way to keep your vagina lubricated?
If not, you need to check out the video above by BuzzFeed.
Warning: it may make you rethink wearing your favourite high heels on New Year's Eve.