This is what stood out to me the most, and people need to understand this "More importantly, there’s no ideal running form. While all humans have the same basic running pattern—just like other animals—your gait is yours alone."
http://naturalrunningcenter.com/2013/08/27/gait-101-learning-run-naturally/
http://naturalrunningcenter.com/2013/08/27/gait-101-learning-run-naturally/