Some fun articles to read:
http://www.bodybuilding.com/fun/bbinfo.htm
Yes, yes, I know it says bodybuilding, but don't let that scare you away. I love the place, tons and tons of good info. Even if your goal isn't to be a professional bodybuilder, most of the information there is still useful for getting in shape and staying healthy. And many of the writers are actually involved in other fields, like sports or strength training. They even have an "Over 40" section of articles.
CMA