Intelligent men tend to be more sexually faithful.
31
Studies show that the risk of a “secret love” being revealed heightens romantic feelings for the partners, thanks to increased levels of phenylethylamine (PEA).
99
Only 10-20% of the population can wiggle their ears and raise one eyebrow.
22
Only 2% of the Earth's population are natural redheads.
13
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