We've heard them a million times before.

Don't go out with wet hair or you'll catch a cold; eat your carrots and you'll see in the dark; you swallow a billion spiders in your sleep throughout your lifetime (okay, maybe that one's a bit of an exaggeration). These urban myths are almost as old as time itself, it seems.

But should we take them as gospel, or scoff in the face of such blatant untruths? Take this quiz to find out - and if you don't like spiders, look away now!