Body mass index = 49/1.70/1.70 =16.9. It is already a thin figure, and the standard weight should be around 60kg. This is a perfect interpretation of a good woman's ideal figure, but it belongs to the devil's figure in the popular weight table on the Internet. So you are already very thin, you can supplement some nutrition and plump up your figure. But in diet, we should also eat less foods with high fat content, such as fried greasy food, or eat these foods together with Shuerjia, which can reduce the absorption of fat. However, the diet should be richer and more nutritious. Eating more fruits and vegetables and foods with high vitamin C content is more beautiful.