Shoulder and arm are interrelated, and poor arm swing will directly affect the effect of moving shoulder. Therefore, when swinging the arm, the shoulders open, relax and sink, and the arm swings back and forth with the shoulder strap and elbow, that is, the big arm drives the small arm, and the action is naturally relaxed and the body is coordinated.

The arm modeling of female models in catwalk shows that when the arm appears in modeling, it naturally droops and has a slight natural curvature, which can not be too straight or too erect, which will affect the visual effect of smooth body lines and feel stiff and uncoordinated. When walking on the platform, the arm swings naturally and comfortably, the amplitude is small before and slightly larger after, which makes the body lines stretch strongly and keep the same rhythm with the gait, and prevents the shoulders from shrugging due to shoulder tension and the imbalance caused by leverage.

2. Slight friction and contact with the crotch on both sides:

When walking on the platform, the arm naturally swings back and forth, and neither the big arm nor the small arm can exert force. With the help of the inertia of the natural forward bounce of the rear swing arm, there is slight friction between the two small arms and the crotch on both sides when swinging the arm. The swing of the arm plays the role of connecting the past and the future, coordinating all parts of the body and reflecting the smooth lines of the body. Therefore, the swing arm amplitude of the catwalk is appropriate, smooth and beautiful, which reflects the overall coordinated and unified performance effect of the catwalk. Arm exercise: when practicing catwalk, emphasize the method of arm movements, and pay attention to whether the arm shape is beautiful and the lines are smooth.