Focus on chest exercises for a long time, and gradually the chest muscles will be stronger than the back muscles, and the back muscle weakness will not stabilize the scapula and arm external rotation.
It will lead to round shoulders, which is what you call elbow external rotation.
It is recommended to strengthen the exercise of back and shoulder muscles. Be sure to relax stretching after training, which can improve the recovery speed of muscles and reduce the risk of injury.
Adopt if you can. thank you
Many reasons, such as high work pressure, little exercise and staying in air-conditioned rooms for a long time, may lead to kidney deficiency, and