We know what to do, but why do we do it? Many of today's popular traditions are based in acts and tales from long ago. Test your knowledge of some of these traditions' origins with this quiz!
The goddess of the moon and the hunt, Artemis, was the first to grant birthday wishes carried aloft by blown-out candles.
Aaron was the brother of Moses, and on his ceremonial breastplate he wore 12 gems signifying the 12 tribes of Israel.
In early November, most of the crops were in, and the dirt roads remained firm for travel by horse and buggy. Farmers could travel on Monday to voting stations and return home before markets later in the week.
Magic Johnson may have claimed to have invented the high-five, but more likely, it originated when Dusty Baker high-fived Glenn Burke at the home plate of Dodger Stadium on Oct. 2, 1977.
It was an octopus! The cephalopod's eight tentacles represented the number of wins needed to take the Stanley Cup.
In Norse mythology, the blind god Hoor kills his brother Baldr with a mistletoe arrow, but it's the Celts who believed mistletoe could make sheep more fertile.
Traditionally, the best man wore a sword and knew how to use it -- should anything go awry with the transaction, the best man had the groom's back.
Is it an offering or a weapon? Unclear. What is clear is that thrown salt keeps the devil from doing bad things to you.
Traditionally, first comes love, then comes marriage, then comes a baby in a baby carriage -- likely about a year after the wedding.
Though you would be remiss not to wave a light during "When the Children Cry," the tradition began at Woodstock, when fans lit candles to accompany singer Melanie's set in the rain.