For those who fear bad luck (or just pay close attention to the calendar), you know that today is Friday the 13th. To many, this is just an ordinary day that has given birth to some silly Friday the 13th superstitions. But for the 17 to 21 million Americans who suffer from friggatriskaidekaphobia — a phobia of Friday the 13th — today is the worst day of the year. In fact, Donald Dossey, founder of the Stress Management Center and Phobia Institute, told National Geographic that $800 to $900 million is lost in business on Friday the 13th, as people are to scared to leave the house and shop as they normally would.
Even if your fears aren't as deep at thfriggatriskaidekaphobics, you still may hold some superstitions about Friday the 13th. And although you may run the other way when you come across a black cat, there are some other, more regular rituals that could lead to bad luck today. So take a moment to learn about the some daily rituals that may you may want to leave out of your routine on Friday the 13th.