Junior high school girls are in the early stages of development. During this period, various sexual characteristics of girls begin to become obvious, especially the breasts, which gradually begin to change from flat to tall. However, since they are in the early stages of development, the chest circumference of junior high school girls is generally not too large. According to statistics, the chest circumference of first-year junior high school girls is mostly between 78.48 and 83.8 cm. In order to make the breasts develop more healthily, we still need to pay attention to many things in our daily life. 1. Standard chest circumference The size of an underage girl's chest is directly related to her age, height and weight. Children nowadays start school at a relatively early age. Girls in the first grade of junior high school are generally between 11 and 13 years old. The standard height is between 146.6 and 156.3 cm, the corresponding weight is between 36.1 and 44.79 kg, and the standard chest circumference is between 78.48 and 83.86 cm. In reality, there are large individual differences, and fluctuations are very normal. Generally, a fluctuation of 5 cm above or below the standard chest circumference is normal. That is, the chest circumference of first-year junior high school girls should generally be between 73 and 89 cm. 2. Growth Suggestions The development of any part of the human body cannot be separated from necessary nutrients, and the same is true for female breasts. In order to ensure that the body can obtain the necessary nutrients during the development process, you should not be picky about your diet. If the nutrition is unbalanced during adolescence, it will cause irreversible effects, and a series of developmental problems such as short stature, thinness, flat chest, etc. may occur. Therefore, a comprehensive diet and balanced nutrition are extremely important. In addition to diet, sleep and exercise are also essential. 3. Breast Science For women, breasts are not only the most important lactation organs, but also the most important manifestation of the charm of the female body. During puberty, breasts, as a secondary sexual characteristic of women, will become clearly prominent, begin to increase significantly at the age of 14, and basically develop to the size of an adult female by the age of 16. Since women's breasts are more susceptible to some diseases, they should develop good care habits from an early age. 1. Avoid holding your chest or binding your breasts during breast development The development of girls' breasts is in a relatively static state during childhood. After entering puberty, due to the maturation of the hypothalamus-pituitary-ovarian axis, the secretion of ovaries and adrenal cortex increases, and under the influence of estrogen and progesterone, the breasts begin to develop. Breast development is often the first "sign" of entering puberty. 2. Girls should choose suitable underwear Adolescent girls should change their underwear as their breast development changes, especially when they are 12-14 years old. Parents should choose suitable underwear for their daughters, which can protect the mammary glands on the one hand and better shape the breasts on the other. 3. Pay attention to nutrition On the basis of ensuring a balanced diet, you can eat more foods rich in collagen, such as pork skin, chicken wings, etc. |
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