For a girl, there is no more sensitive figure than her weight. The girl’s weight is the same as the boy’s salary, are secret, know the girl’s weight, is equivalent to choke the throat of her fate. Many girls consider weight loss as their lifelong career, there must be a scale at home, the phone wallpaper is changed to high value with abs vest line of female celebrities, the motto is “either thin or dead.” So, is it right for girls to have such high requirements for their own body? Fat in the eyes of girls is really obese? Usually what we call obese is based on weight, that is, weight has become a core criterion to determine whether obese. Commonly used international formula for calculating human weight, as well as body proportion calculation (more suitable for oriental people) Standard weight = (height cm-100) x 0.9 (kg) standard weight (female) = (height cm-100) x 0.9 (kg) -2.5 (kg) normal weight: standard weight +- (how much) 10%. Overweight: greater than the standard weight 10% less than the standard weight 20%. Light obesity: more than standard weight 20% less than standard weight 30%. Moderate obesity: greater than the standard weight 30% less than the standard weight 50%. Heavy obesity: more than 50% of the standard weight More than the standard weight Weight control in the normal range, so that their body more attractive, which is not wrong, but some people on the pursuit of low weight far beyond this range. Too much fear of fat, so that they produce a series of excessive weight loss behavior, such as dieting to the point of suffering from anorexia. Then in addition to weight we can also look at a value, namely the BMI index. In addition to BMI, we can also look at another number – body fat percentage. Body fat percentage refers to the proportion of body fat weight in the total body weight, also known as body fat percentage, which reflects the amount of fat content in the human body. The body fat percentage for normal adults is 15% to 18% for men and 25% to 28% for women, respectively. Body fat percentage should be kept in the normal range. If the body fat percentage is too high and the body weight is more than 20% of the normal value, it can be considered obese. Through BMI and body fat rate these two data we can generally determine the degree of obesity. For girls, having a good body is the first step to becoming beautiful. We all have the pursuit of beauty, but we should not be fussy and pay too much attention to appearance, if the body hormone level disorders and a series of metabolic diseases caused by excessive weight loss is not worth the loss. The pursuit of beauty is not wrong, but must be maintained on the basis of health to lose weight, after all, health is the best gift to their own.