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"Arm circle" is an exercise to make circular motions with your arms. By this exercise you can move your shoulder blade effectively, so it helps to solve your stiff shoulder in a short time. If you do it in the sense that you move your hands as far as possible in all directions, you can move your shoulder blade well.「腕回し」は文字通り腕をぐるぐる回すエクササイズです。肩甲骨を効果的に動かすことが...