If the arm is fat, if the circumference is 40, the level is fat. It's not a fat arm. If the latitude of this person's arm is 40, it belongs to a more powerful type.

Advantages: 1, people with arms over 40 cm wear thin clothes, undress and have meat, and their breasts will not be too small and their backs will not be too thin; 2, can enter the gym, the standard is that the arm circumference exceeds 40 cm. Disadvantages: People with arm circumference greater than or equal to 40 cm are slightly inferior to professional athletes who pay attention to sports performance in explosive power.

In short, people with an arm latitude of more than 40 cm can surpass most ordinary people.

The arm circumference reflects the degree of development of arm muscles. Upper arm circumference includes upper arm tension circumference and upper arm relaxation circumference. The average difference in arm circumference is 2-3.5cm for males and 0/.5-2 cm for females. Measure the thickest part of the upper arm with a tape measure.