The last week I have included and done a lot of an Iyengar chair asana. It has released some tension in the sides of my upper body as well as a wonderful extension has taken place in my shoulders. The breath flows more easily, and the movement of the upper body improves.
You stand with your legs hip width apart. Place your hands shoulder width apart on the top of the chair and bend down in a 45 degree angle. Adjust your legs so that this takes place. You can investigate the asana and move your head accordingly.