So much bad advice. (1) Actually it does matter how and where (relative to your body) you land your foot. Contrary to the article, many people do need to fix their "natural" form and/or get shoes that help them avoid pronation, both to avoid injury and to increase the enjoyment that will help them stick with it. (2) Similarly, the article's advice about stretching is way out of date. It's now consensus that static st…
Turns out my technique was bad and I had a week muscle in my knee, now I've badly messed it up. The worst thing is that it never hurt seriously -- you can build up some serious damage without ever being in serious pain.