I've now lived in China for about three months, and it has been an eye-opening experience in more than one way. Even though Shanghai is a very modern and cosmopolitan world city, there is still a deep-rooted sense of tradition and culture here.
And, one of the things that I have learned is that women will not drink cold water. They only drink warm (or hot) water. They believe that your body must be warm in order to have a healthy uterus and carry a child. A cold body harbors illness and isn't conducive to fertility. So, even from a young age, the women drink warm water.
I thought I'd give it a try. Why not? It couldn't hurt, though I've found, I prefer hot water to warm water. Warm water just reminds me of a tepid bath or coffee that's gotten too cold. So far it hasn't worked yet, but you never know.