Depending how you look at it, Friday the 13th can be considered a lucky or an unlucky day. Just ask Taylor Swift, Megan Fox, Jennifer Aniston and more celebrities who believe in superstitions.

The exact origins of Friday the 13th may be somewhat of a mystery of its own, but many agree it has roots in Christian stories.

Relying too much on superstitions could increase anxiety in some situations. If you break a mirror on Friday the 13th, for example, that can bring distress.