6 Ways to Keep your Knees Pain-free

6 Ways to Keep your Knees Pain-free While you never hear of "walker's knee", pain in the knee joints is hardly unheard of among fitness walkers. Fortunately, it's easy to prevent with stretching, muscle strengthening and good technique.

Original article and pictures take http://www.active.com/walking/articles/6-ways-to-keep-your-knees-pain-free site