The standard of right-angle shoulder is that the arm lines are slender and the shoulders are straight. If you want to practice right-angled shoulders, you can do this:

Trapezius stretching. Hold the back of your head obliquely with one hand, and then touch the ear on the other side with your fingertips to stretch your head. The pain in your neck indicates that the action is correct.

Stand against the wall, W-shaped training, pay attention to tighten the abdomen, and the calf is vertical to the ground.

For people with thick backs, a little more strength training can make fat burn faster. In this way, muscle groups can also gain more strength.

In addition to these exercises, we should maintain good manners in daily life, always keep our shoulders open and sink, keep our neck upright and not stretch forward, usually carry less backpacks and do stretching exercises after carrying heavy objects.