More variations on downward facing dog pose using a wall. The change of gravity and position helps open the spine and allows one to build strength in the arms and hands while working on stretching through the upper spine and finally into the neck. Play with these they’re great fun.
I highly recommend these if you work in an office, have slouched upper back posture or upper back/neck pain. Do it several times a day for 5-10 minutes for a week. It’s one thing to read about the benefits of a pose. It’s another to have your body integrate the pose into your nervous system. Breathe.