Friday the 13th: 13 superstitions explained

We humans are a superstitious lot, believing that Friday the 13th is bad luck and finding a penny is good luck.

Many superstitions stem from the same human trait that causes us to believe in monsters and ghosts: When our brains can't explain something, we make stuff up.

In fact, a study last year found that superstitions can sometimes work, because believing in something can improve performance on a task.

Here, then, are 13 of the most common superstitions.

Read more...https://www.mnn.com/lifestyle/arts-culture/stories/friday-the-13th-13-superstitions-explained