One popular exercise is the "PNF" diagonal shoulderexercise from the Proprioceptive Neuromuscular Facilitation concept.
一种流行的练习是来源于神经肌肉促进技术理念的PNF螺旋对角肩部练习。
2
Stand with your feet shoulder-width apart. Face the front and do not move the head nor the eyes throughout the exercise.
首先两脚分开与肩同宽站立，面向正前方，在做这个练习的时候不要移动头部和眼睛，然后缓慢地向左侧摇晃你的身体，同时抬起你的右脚跟，在做摇晃动作的时候不要去看任何东西，保持注意力集中在这个动作上 （be aware of movement mainly,这句翻译拿不准，请朋友们指正 ）。
3
So, there are two important actions in this exercise: (1) your shoulder blades move inward by virtue of the actions you are doing, but (2) you still maintain space between them.