or
You can only change this situation by matching clothes. Doing more chest expansion exercises and lifting dumbbells on your back can make your shoulders wider, but it seems impossible to shorten your neck.
The best way to exercise is to look up and down in four directions every day, and then make a circle in the forward direction and a circle in the reverse direction. To make the neck muscles tight, stick to it for a period of time, and the fat on the neck will disappear a little, which is of great help to delay aging.