The largest component of the body is water, accounting for about 50%-60% of body weight, followed by fat. Others are proteins, sugars contained in muscle, and inorganic substances contained in bone.

Body fat percentage refers to the amount of fat in the body as a percentage of body weight.

The body fat rate of male students is about 17-23% and female students are about 20-27%. Boys under 30 14~20% Boys over 30 17~23%, Girls under 30 17~24% Girls over 30 20~27% The average BMI of male students is about 20~25% and female students are about 19~24%