Head on over to this American Heart Association site where the experts say if we walk more and eat better, we'll live longer. They're so sure of it, in fact, that they're kicking off National Start Walking Day on April 16.

Do you know that heart disease is the number one killer in the United States? Do you know that physical inactivity doubles the risk of heart disease? Sobering, isn't it? Fortunately, these facts can be changed. Here's how.

First, you can start walking and start reducing your risk. Second, you can support the American Heart Association. The folks there are challenging Americans to walk a million miles and raise a million dollars all in one day -- April 16. Ready to accept the challenge and help fight heart disease and obesity? Click here for more information.