Today is considered by millions of people as the unluckiest day in Western superstition. The origins of the concept are unknown, but it's believed to date back to the Middle Ages.
Do you dread Friday the 13th? The good news is that it can’t happen more than three times a year, but the bad news is that it does occur at least once in 365 days.
The fear is so serious that there is even a medical name – actually three – for it. People may experience physical symptoms such as nausea, vomiting, difficulty breathing, rapid heartbeat, and sweating.
One of the most famous practices related to the unlucky number is skipping the 13th floor in elevators in many tall buildings, not just skyscrapers. Architects have been labeling that floor with another name for at least a century.
You may believe the superstition or laugh at it and people who do, and you may even use it as an excuse to stay home and watch horror movies all day, but it’s certainly one of the most talked about dates on the calendar.