The process of physical development of girls

　　The process of physical development of girls : The pelvis further significantly widens between the ages of 14 and 15. The menstrual cycle is initially established. If the menstrual cycle extends to more than 6 months or a menstrual period lasts for more than 11 days, it is abnormal and you should seek help from a doctor. The real pubic hair begins to replace the downy hair. The growth of pubic hair must go through four stages: sparse and light-colored pubic hair, gradually becoming darker, thicker and curly, and changing from a small amount of distribution to a relatively dense distribution. Only then can it reach the distribution state of adult female pubic hair. A typical adult female pubic hair is distributed in an inverted triangle shape, but individual differences vary greatly. As the mammary glands continue to develop, fat and blood vessels increase, causing the entire breast to bulge, and the brown areola around the nipple gradually expands. About 80% of girls do not have adult breast development until they are 16 to 19 years old. In addition to hormones, breast development is also influenced by genetic factors.

　　Judging from the sexual development process above, there are many differences in general principles. Some are earlier, some are later, some are faster, and some are slower. In medicine, they are called individual differences. The reason is that there are different types of development. Generally speaking, development types can be divided into three types:

　　The first type is called precocious type. Puberty starts earliest, starting at the age of 8 or 9. The peak growth spurt also occurs earlier, and the time to stop growth is also earlier. Generally, the growth spurt can only last for about 1 year, resulting in a shortening of the entire growth period. Therefore, girls with this type will mostly be short and fat in the future.

　　The second type is called late maturing type. Puberty starts at the earliest, as late as 14 to 15 years old. The peak of growth is also the latest, and the time to stop growth is also postponed. Therefore, the growth spurt lasts the longest, up to about 3 years, and the entire growth period is significantly extended. Girls of this type will mostly be tall and thin in the future.

　　The third type is called balanced type. Between the early-maturing type and the late-maturing type, puberty starts between the ages of 12 and 16, and the spurt lasts for about 2 years.

　　It is not difficult to understand from this that different types of development lead to different puberty sooner or later, and body shapes vary widely. Therefore, we should not force uniformity and blindly compare. Parents must be aware of this to avoid unnecessary worries. 》》》 Beautiful women tend to have disharmonious sex lives    often do this5Dreams imply that women want to have an affair