15 percent of Americans secretly bite their toes.
57
Yawns are more contagious among people with closer relationships.
163
The Japanese commonly put ketchup on their rice.
16
Only 10-20% of the population can wiggle their ears and raise one eyebrow.
22
According to the American Society for Microbiology, 90% of women and 75% of men wash their hands after using a public restroom.
170