A recent study found that body fat percentage was the strongest predictor of male attractiveness. The most attractive bodies had around 13–14% body fat — a level linked to optimal metabolic health.

It is estimated that up to 12% of women might be tetrachromats - capable of perceiving millions more colours than the average person. Men generally cannot have this condition.

Rock-paper-scissors originates from Jan-ken, a Japanese variation of a Chinese game brought to Japan in the 17th century, which featured a slug, frog, and snake.

Research shows that consumer demand for sausages is inversely proportional to the health of the economy.

Blinking throughout the day adds up to having your eyes closed for about 30 minutes.

Spain, Mexico, Argentina, and many other countries don't have a tooth fairy; they have a tooth rat named El Ratoncito Pérez.

A 2008 study identified the top 10 choking hazards for young children as hot dogs, peanuts, carrots, boned chicken, candy, meat, popcorn, fish with bones, sunflower seeds, and apples.