What makes you suddenly dart into the bakery when you spy chocolate- frosted donuts in the window, though you certainly hadn't planned on indulging? As you lick the frosting off your fingers, don't blame a lack of self-control. New research from Northwestern University's Feinberg School of Medicine reveals how hunger works in the brain and the way neurons pull your strings to lunge for the sweet fried dough. Krispy Kremes, in perhaps their first starring role in neurological research, helped lead to the discovery.

While her pop star peers have been losing weight the old-fashioned way—namely some combo of detox diets and energy-boosting substances—Rihanna seems to have gone a more traditional route. And it’s paid off.

This year's 10 best and 10 worst walking cities in the United States, according to the Prevention/American Podiatric Medical Association, study:

 10 Best U.S. Walking Cities of 2008

  10 Worst U.S. Walking Cities of 2008

I admit it...there's so much happening right now that I want to share with you that I can barely find the time to blog about it all. That's why I've decided to just plop it all here for you in one swell foop of a blog post so you can see what all you're missing. It's a lot of stuff, so hang on to your hats folks. Here goes!