Middle Back, Upper Back
Shoulders, Traps
Watch Tutorial
https://www.youtube.com/shorts/zjohcGhsfEU
https://www.youtube.com/shorts/ZYhhYfSvSo4
https://www.youtube.com/shorts/95ln1RTfCWw
Sit/stand tall.
Extend arms forward shoulder height.
Clasp hands, palms away.
Round upper back, push hands forward.
Feel stretch between shoulder blades.
Hold 15-30s.