Below demonstrates how forefoot running reduces back pain as compared with heel strike running.
What Should I Do with My Upper Body When Running?
Multiple lines of research has shown the best way to use your upper body when running is to lean forward while letting your torso slightly twist side-to-side (i.e. thoracic rotation). This was found to dramatically improve the shock absorbing characteristics of the back, alleviating lower back pain and it even unstresses the knees!
