Yawns are more contagious among people with closer relationships.
163
A hard working adult sweats up to 4 gallons per day.
39
One million Americans, about 3,000 each day, take up smoking each year. Most of them are children.
-86
Intelligent men tend to be more sexually faithful.
31
A study had men report their own penis size, and the average was found to be 6.1-6.5 inches. A subsequent clinical study actually measured penises, and found the average size to be 5.1-5.7 inches.
-3
Americans collectively eat one hundred pounds of chocolate every second.
60