If you work regularly with a yoga band, you will notice that your upper back becomes more flexible and open, your shoulders become more stable, your entire spine is supported, your upper body becomes more relaxed and your breathing becomes freer. Essential in the yoga of alignment.
Combined with the exercises I can say that I my posture rapidly improved so far. I do them rigorously daily and proud of my results so far. Thank you for being inventive. Moving forward, back to a natural balance.