Videotips on running techniques

Yesterday I was browsing YouTube for clips on running. I liked this one as it gives you as a runner a scan that you can perform during your training. You can scan your posture form head to toe and adjust if you lie trying to achieve a more efficient running technique. When I went running yesterday I paid atention to my arms and found that indeed I move them a little bith sideways. I was able to reduce this and it did not feel uncomfortable. It helped me also keep my shoulders a bit more to the back and lower and therefore more relaxed. See for yourself if it contains usefull tips for you.