A nice article, certainly full of good news for most people. Unfortunately, some of us with troubled sleep can't afford having a nap after lunch - the night's sleep would be much worse or might not come at all. The other thing is that we most probably wouldn't be able to force ourselves to fall asleep for the purpose of such research. However, I'm forwarding this page to my father who always feels a bit guilty when it comes to his afternoon naps. I'm sure it will make him happier. :)