Big muscle bully refers to the fitness crowd whose muscle circumference is far beyond normal. They usually have the following characteristics:

1, body mass index (BMI) is greater than the normal range.

Body mass index: 18.5-24 is the normal range, and the calculation formula is: body mass index = weight (kg) divided by the square of height (m).

2. The body fat rate is lower than the normal range: 20% ~ 25% for women and 0/5% ~18% for men.

3. The muscle circumference is large, the lines are obvious and the proportion is exaggerated.

4. Interest in iron is far greater than that of the opposite sex.