Yawns are more contagious among people with closer relationships.
163
90% of people sit at their computer desk slouching, supporting their head with their left hand.
41
The single biggest predictor of love is proximity.
30
The average American eats at McDonalds more than 1,800 times in their life.
52
One million Americans, about 3,000 each day, take up smoking each year. Most of them are children.
-86
There are two credit cards for every person in the United States.
2