Stretch your arms horizontally, and then move up and down between 45 and 75.

note:

1, continuous 100 times, without stopping;

2. The neck and back should be straight and not bent;

3, the arm is flat, the palm is down, and the arm cannot be bent and weak. Doing it twice a day can reduce the fat on the shoulders and back of the head, and it can be effective in one month.