In recent years, with the continuous improvement of people's living standards, more and more people like to go to the gym to exercise. Go to the gym for systematic and scientific exercise in order to have a good figure. For many boys nowadays. If you go to the gym to exercise, people will prefer to exercise muscles, especially abdominal muscles and arms. When men exercise their arm strength, the arm circumference can be said to be a very important indicator. Different heights and weights have different standards for how strong the arm circumference is. Generally speaking, if an Asian man is more than 1.7 meters tall, his arm circumference should be between 38 and 40 to be considered stronger.