1, raise your arms sideways. This action can effectively stretch the muscles at the back of the arm, thus achieving the effect of shaping. Raise your arms shoulder width, stick your arms down on your thighs, and then lift them again. Repeat the action in groups of 60 people and do 2 groups. Interval of each group 15 second.

2. Hold your head and pinch your elbow. This action is mainly aimed at the medial and posterior muscles of the arm. Open your arms shoulder-width apart, and then push them back. Group of 60 people, divided into two groups. Interval of each group 15 second.

3. Bend and open your arms to your chest twice. 60 lateral muscles as a group, do 2 groups.

4. Open your arms shoulder width and turn around. Total tuberculosis of the whole arm. Circle two groups forward and two groups backward. Each group interval 15 second, do four groups.