The clavicle can actually be practiced, but first of all, thinness is the key. Not that you should be thin, but that you should at least get rid of the chubby world. Relax the shoulder-neck connection (massage, correct fitness posture, shoulder-neck back stretching). Train back and arm strength. Stand on the wall and practice stretching your shoulders every day. At ordinary times, we must develop the good habit of holding our heads high and shoulders heavy! It may be through exercising muscles to tighten, and then the clavicle shape will look much better than when you are relaxed now (finally flat ...). In fact, the degree of clavicle protrusion is caused by many reasons. If you really want to make your collarbone more prominent under the existing conditions, I will explain it to you according to the victory. Although being beautiful is a good thing, never forcibly correct the suprachiasmatic syndrome (if there is such a phenomenon). Don't touch the clavicle in order to protrude, because acromioclavicular joint and sternoclavicular joint belong to micromotion joint, and the peripheral blood vessels and nerves are developed. Frequent rubbing around the clavicle is likely to reduce the stability of the fretting joint or the pathological changes of peripheral nerves or blood vessels.