http://blog.corewalking.com/videos/
I have utilized and studied the FitzGordon Method and find it to be so helpful, The link above will take you to the FitzGordon Method Core Walking Program and is filled with worthwhile videos on posture and exercise to alleviate pain and improve posture, I highly recommend you visit this site and take advantage of the generous information to improve your wellbeing. The Fitzgordon method offers a means to change a lifetime of conditioned patterns and walk through life as a new you. At the above link you can see sample videos that will start you on the road to a new way of thinking, feeling, and moving. (you have to copy and paste this link into your browser to get to this site. http://blog.corewalking.com/videos/psoas/Psoas exercises

You will need to copy this link and place it in your browser to get to this website