Fit and 40-Plus - WebMD

How to get (and stay) active, no matter what your age

In your 40s and beyond, fitness tends to take on a new shape. Exercise routines you once found merely challenging may become painful or even impossible by the time you're 40, 50, or 60.

It doesn't matter whether you're male or female, a kickboxer or a mall walker -- sooner or later, age will have an effect on your body.