Do you believe in superstitions? A new study shows that they might just work. However, it's probably not in the way you think.

Ever knock on wood? Throw salt over your shoulder? Most of us have done these things from time to time to make ourselves feel better about a situation.

The study done by the University of Chicago says that superstitions actually work because we believe in them. So, knocking on wood won't actually prevent something terrible from happening. However, it allows us to feel more confident that something work.

Confidence typically yields good results. So, in theory we ought to keep practicing superstitions.