[header] How to get a more flexible back [title] Try a bow pose. [step] While lying flat on your stomach, bend your knees so that your feet point up toward the ceiling and reach behind you to grab your ankles. Lift up with your arms and feet to feel a nice stretch in your shoulders and abs. 
[substeps] Hold the pose for 20-30 seconds, then exit the bow pose on an exhale breath. You may repeat the pose several times for better results.