On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
A chance of a woman having twins is increased after the age of 35. About 1 in 27 women will give birth to twins after this age. After 50 the chances of having twins is 1 in 9.
51
Yawns are more contagious among people with closer relationships.
163
Studies suggest that people who appear to be constantly distracted have more "working memory" and "sharper brains".
13
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
Roughly a quarter of the world's people live in China.
50
In 2002, Kenyan Maasai tribespeople donated 14 cows to the US to help with the aftermath of 9/11.
22