This article is pretty interesting. It talks about how to spring off the ball of the foot and not the heel. This style of running purports to eliminate injury.
This link is to a video that demonstrates the running style:
The Lost Secret of Running - Video Library - The New York Times
I've been running a bit this year, it works my lungs better than anything else I do. I tried the method as shown in the video at the fitness center this morning. I don't think I'm a natural heel striker when I run. The only thing I really did differently was to bring my knees up higher. It will be interesting to see if I feel the burn tomorrow.
Has anyone here tried this method of running?