This theory just clicked!
hehe
I was thinking that in the past, people got married earlier and had kids around our age..
And i had learnt that having kids cause a lot of stress and lots of lack in sleep for at least 2 years, and more for the mother..
So as you can see, this is the reason why uni students can manage late nights! It is simply because they are made to use this energy to look after children..
And it is the time when they can endure the most pain too perhaps >=)
sidenote: i read this article on how many men get depressed after witnessing their wife give birth, cos they are haunted by the image of the baby coming out,- that image imprinted in their minds forever,.. apparently they were less attracted to their wives cos of that witnessing, as opposed to the fact that it was commonly thought of as a "bonding experience" so that the parents can become closer etc.. it has caused some people opposite effects... interesting..
