Promotes effective running form. Great training shoe. After consistently running in the muscle runner if I can feel the distinction in foot placement when running. I would equate it to a swimmer that can easily identify I poor stroke after mastering proper body alignment. I think this is important in terms of being able to properly address muscle imbalances or prevent future muscle imbalances that often develops in the occasional recreational runner. We can't stop the clock on our bodies, but we can slow the rate of degradation to our joints that often develop because of overuse and the lack of proper muscle recruitment. I think the shoe is a great addition to the toolkit of the recreational runner, seasoned athlete ( e.g., speed work), or morning walker ( e.g., proper muscle recruitment).
