Female standard weight = (height cm-70) × 60%.
The standard weight of girls with height 165cm is (165-70) × 60% = 57kg. That is to say, regardless of age, women with height 165cm and weight less than 57kg are considered to be thin.
About thinness, there are healthy thinness and unhealthy thinness. Let's talk about normal weight, overweight/underweight and obesity/underweight:
Normal weight is between 10% of standard weight, overweight/underweight is between 10-20% of standard weight, and obesity/underweight exceeds 20% of standard weight.
Girls with a height of 165cm have a normal weight of 5 1.3-62.7 kg, and are thinner than 45.6-5 1.3 kg, and thinner than 45.6 kg.
Being underweight is harmful to health, and being underweight is harmful to health. Therefore, girls with a height of 165cm are healthy and thin, while girls with a weight of 45.6-5 1.3 kg are unhealthy and thin.
Many girls regard thinness as beauty, but thinness should be measured or based on health. In fact, no matter from the perspective of physique, health or male preference, thinness is not beauty, but a curvy figure is beauty.
Curved figures such as breast enhancement, flat or abdominal muscles, streamlined back, rounded hips and slender legs are all healthy and beautiful. To shape and have a curvy figure is to insist on corresponding training.
By jogging, skipping rope, swimming, aerobics, spinning bike, elliptical machine and other aerobic training to reduce fat, and then training for different parts of the body to increase muscles, you can shape a healthy and beautiful curve figure.