On Friday the 13th, leave the superstitions at home

  Of all the days to stay in bed, Friday the 13th is surely the best. It’s the title of a popular (if increasingly corny) horror movie series; it’s associated with bad luck, and it’s generally thought to be a good time not to take any serious risks.

  Even if you try to escape it, you might fail, as happened to New Yorker Daz Baxter. On Friday 13th in 1976, he decided to just stay in bed for the day, only to be killed when the floor of his apartment block collapsed under him. There’s even a term for the terror the day evokes: Paraskevidekatriaphobia was coined by the psychotherapist Donald Dossey, a specialist in phobias, to describe an intense and irrational fear of the date.

Why is 13 considered unlucky? Explaining the power of its bad reputation

  Would you think it weird if I refused to travel on Sundays that fall on the 22nd day of the month?

  How about if I lobbied the homeowner association in my high-rise condo to skip the 22nd floor, jumping from the 21st to 23rd?

  It’s highly unusual to fear 22 – so, yes, it would be appropriate to see me as a bit odd. But what if, in just my country alone, more than 40 million people shared the same baseless aversion?

How did the superstition that broken mirrors cause bad luck start and why does it still exist?

  Every human culture has superstitions. In some Asian societies, people believe that sweeping a floor after sunset brings bad luck and that it’s a curse to leave chopsticks standing in a bowl of rice. In the U.S., some people panic if they accidentally walk under a ladder or see a black cat cross their path. Also, many tall buildings don’t label their 13th floors as such because of that number’s association with bad luck.