There are many yoga moves that focus on shoulder width and back fat, such as camel and mermaid. . . You don't have to practice a full set of movements to practice yoga. You can choose a few actions that you think are very practical and practice them every day, and you will definitely see the effect.
In addition, I have a little trick that I use to lose weight on my arms and shoulders. It is very useful. You can see the effect in a week or two. I hope it will help you: stand up straight, put your feet together, put your hands above your head, support them on the door frame, and push them up, 1-2 times a day, each time for 5 ~ 10 minutes.
It should be very helpful to your health. If it is useful, please choose it as the best answer. I also hope that mm will be confident as soon as possible.