Full and charming breasts are what many women dream of and are proud of. Marilyn Monroe's sexiness and Nina Li Chi's breast standards are still being talked about. In order to make their breasts look plump and firm, women use lined bras, use breast enhancement drugs, do breast enhancement exercises, and even endure pain for plastic surgery. This shows people's yearning and pursuit of beauty, eager to have a pair of beautiful breasts. How do breasts develop? What kind of breasts are perfect? This is a concern of many women. As we all know, in childhood, there is no difference between male and female breasts. With the increase of age, the levels of estrogen and progesterone in girls' bodies increase, and their breasts gradually begin to develop, generally starting from the higher grades of primary school. According to a survey, at the age of 10, the breasts of15 girls began to swell; By the age of 14, 98% of girls' breasts are swollen; 15 years old, the breasts are almost the same as those of adults, but they are still immature. With further growth and development, the breast is full of fat, thus becoming plump and mature, as elastic as a ball. Most women's breasts are the most elastic and attractive when they are 2 1~22 years old. In the future, as women get married and get pregnant, their breasts are obviously enlarged, which is ready for breastfeeding. After lactation, the estrogen in the female body decreases, the breast shrinks, loses some elasticity and droops. Even without pregnancy, women's breasts begin to get smaller and less elastic after the age of 30. Women's breasts become smaller and looser after menopause. A woman's breasts have changed so much in her life. Where is the mystery? This is about the anatomy and physiology of the breast. There are mammary glands and fat in the breast, and there are 10~ 15 glandular lobes on both sides of the breast. Each glandular lobe has a milk duct, which is radially arranged around the nipple and ends in the nipple. There is a lot of cellulose perpendicular to the skin in the connective tissue between mammary gland lobes. One end is connected with skin and superficial fascia, and the other end is connected with deep fascia, which is the reason why female breasts are upright and plump. The development of breast is greatly influenced by female hormones, and the fluctuation of sex hormones in female sexual life causes corresponding changes in breast. Some women ask: What kind of breasts are the most beautiful? From the appearance, breasts vary in size and shape. Most people think that the perfect breast is conical, towering and straight. The bust at the top of the breast is x 0.5 15, the bust at the bottom is x 0.432, and the position of the breast from the heel is x 0.79. The nipple protrudes slightly outward, and the distance from the nipple to the center of the chest is about 1 1~ 13. But this is not an absolute number, and a difference of several centimeters is normal. Moreover, other shapes such as hemispherical, disc-shaped and drooping breasts also have their own unique charm. Different people have different aesthetics in different periods. According to many people, Mona Lisa may have to lose weight. Therefore, women with different breasts and the above shapes should not have any anxiety and psychological burden. Why do women's breasts vary greatly in size? This problem is more complicated. Generally speaking, it is related to heredity, nutritional status, physical exercise and other factors. Generally speaking, some women's small breasts are caused by heredity. Even if nutrition and exercise are strengthened, the effect is not obvious. Some women suffer from breast dysplasia due to nutritional status. Nowadays, many women over-diet in order to have a very slim figure, and it is unrealistic to want to have plump and elastic breasts. Girls who often take part in physical exercise generally develop better than girls of the same age. In fact, the size of breast has little to do with physiological function. It has long been known that breast size has nothing to do with breastfeeding ability. In fact, as long as it is normal, small and straight breasts are not interested. Due to different races, there are great differences between the breasts of eastern and western women. In Europe and America, women's breasts are generally plump. Asian women have relatively petite breasts. Therefore, the fullness of breasts is the unremitting pursuit of Asian women. Every woman wants to be a plump woman, a big woman. However, for various reasons, not every woman can do it. It is really fragile inside, and women's breasts are too flat, which leads to inner depression, dissatisfaction with sexual life and extreme inferiority. The development of modern medicine provides many effective methods for women. For example, drug breast enhancement is one of the effective methods, and the newly developed gene breast enhancement, such as (gene breast enhancement package: this package consists of cell breast enhancement emulsion and cell breast enhancement cream. Just like a natural bra, it contains gene beauty factor, plant protein, glucose, amino phosphorus complex and so on. It is suitable for women with flat chest, sagging breasts and congenital breast dysplasia. It can effectively strengthen breast support ability, prevent breast tissue from loosening, strengthen dermal fiber tissue, make breast tissue sound, effectively resist sagging and external expansion, endow chest with natural straightness, enrich elastic effect, show a plump, compact and solid appearance, effectively increase breast and strengthen breast support ability, and the effect is very obvious. You can be as big as you want and give it a real femininity.