Originally Posted by
black_box
This. Pay attention to your technique and ramp up slowly as mentioned. Landing on your heels acts as a brake to your forward motion and sends a shockwave up to your knee. Check out the book Chi Running, your library may have it.
http://en.wikipedia.org/wiki/ChiRunning
Thanks for the advice guys, but an broken clavicle is putting a hold on my training plans. when I do get back to it, this slowly softly jogging will probably be the order of the day.