The standard weight for a 168CM girl is about 63 kilograms. The general standard weight in kilograms = height in centimeters minus 105. while more than 10% of the standard weight is defined as overweight, more than 20% is obese, less than 10% of the standard weight is lean, and less than 20% or more is emaciated. However, this formula is suitable for adults, children and the elderly are not applicable. Excessive pursuit of bone size is unhealthy, and too much fat will also increase the risk of suffering from diseases. The general standard weight up and down 10% is more appropriate. However, if you are excessively obese, control the intake of carbohydrates, fat and other foods. At the same time adhere to exercise and maintain a healthy lifestyle. Standard weight is only a reference, not necessarily within the standard weight range is healthy. To determine whether you are healthy or not, you have to undergo a detailed physical examination. People who are obese or thin may also be without organic diseases.