Series of Gentle Yoga Poses fro Back Pain Releif. http://www.sensational-yoga-poses.com/yoga-postures-for-back-pain.html This series of poses stretches the front of the spine and/or hips with either the head or ribcage supported.
Table top Yoga Pose. Retract your shoulder blades. Then bend your thoracic spine backwards. Then lift your hips. And if you have trouble retracting, then practice. http://www.sensational-yoga-poses.com/beginners-yoga-routine.html#leanpub-auto-table-top
The second half of the Active Stretching Sequence. https://leanpub.com/active-stretching I use the complete sequence as a framework for teaching the muscle actions that help to make active stretching effective.