Not necessarily! Running on soft surfaces, such as grass and dirt trails, reduces the impact dramatically. In fact, running on asphalt is much softer and better than running on concrete. Many running related aches and pains are caused by running on concrete and/or old shoes. Moderate exercise, like running, actually improves knee health (for chronic knee problems see your Doctor before starting your running program).

The fresh cushioning of new shoes can often alleviate knee soreness caused by shoes that are on their last miles.

That depends on you and your feet! Each brand and model has its own particular fit, as our feet have their own particular shape. Some of us fit better in some brands and models than others.

A shoe that some friend or acquaintance says is best, may not be best for you.

Typically a shoe will cushion and stabilize for 300 to 500 miles; depending on the shoe, your weight, the surface you run on, and on your running style, among other things.

Running in an old shoe can result in injuries that could keep you off the roads and trails unnecessarily.