I'm new here :)
I'm a 34 year old Irish Yoga Teacher, and I've spent the last 3 years investigating ways to improve my posture.
I found that most of my problems stemmed from tension in my head, and this caused tension the whole way down my back.
So I developed a 15 minute exercise to improve flexibility and the range of motion of the spine. You just need to be able to stand up and move your head and neck.
I'm happy to teach this to anyone who is in pain, so just let me know!
Best wishes to all of you