tg puttu's conjecture: The chances of a woman getting twins increases when shes tall or eats lotta dairy products or lives near a really polluted area??
Theorization needed
In my opinion, polluted environment have bacteria/protozoa/virus which does various kinds of interference with metabolism and work against the smooth functioning of ecosystem.
With over pollution due to the added toxic chemicals even these micro-organisms can get their genetic structures up and they can become Intelligent. They see it clearly that its actually the over population of human race that is a threat to the ecosystem. Now they intelligently follow their goals of ruining the ecosystem by helping this population explosion, hence twins, triplets and quadruplets.
About me: I don't know. But, I like laughing and I cannot survive without water. I know no one can, but I need it more than an average human does. I drink water all the time. And although cold water tastes better, it is fattening, I recommend lukewarm water for those trying to lose weight. But after running a mile or on a hot summer day, nothing beats cold water, nothing.