According to the survey, young girls' breasts change from the higher grade of primary school, with an average of one in five people expanding at the age of 10, and almost 99% of children's breasts expand by the age of 14.
To put it simply, the breast is inflated by the subcutaneous fat filling of the lactation tissue (mammary gland) above the chest muscle. The time when breast swelling begins is mainly under the action of follicle-stimulating hormone or progesterone, so that the breast is developed. But the strange thing is
love egg , without fat, the breast is very difficult to develop.
Experts say: so why do breasts and buttocks produce fat? In fact, this is an unexplained question. I think that part may have special receptors for adipocytes, but unfortunately, the structure is not clear. Otherwise, poor breast women will no longer have to worry about it. Some scholars suspect that fat itself is different, but it has not been proved. However, according to the hunger strike tests we used in mice, breast fat lagged 2-3 days behind other fats.
Generally speaking, when a girl is 15 years old, her breasts are almost the same as adults, but she is still immature. This can be confirmed by moving up and down, left and right. The 15-year-old girl's breast elongation rate is small, while the 25-year-old girl's breast movement in either direction is very obvious. The reason for this difference is that the attachment of fat is different. A survey by Walker shows that when the breast is maximally expanded in the breast, the breast is as flexible as a ball. However, having breasts alone cannot be as soft as a woman's breasts. In other words, if the breasts are filled with fat
best vibrator , they will mature. The age of 21 and 22 is the most attractive period for girls' breasts. At this time, the shape of the breast is conical, towering and straight, the breast tip chest circumference is 0.515 body length, the bottom round chest is 0.432 body length, the overall position of the breast is slightly less than a teenager, the heel is 0.719 body length, fullness and softness are the best.
What is the difference between women's breasts of different ages
30 years old
Many 30-year-old women's breasts are still in good shape and elastic. However
dildo squirt , if you have a child at this time, please pay attention to the changes in your chest after delivery. During pregnancy, the breast will gradually become larger, postpartum or after lactation
horse cock dildo , the breast may sag, the cup size will also be reduced. This is called "breast aging", mainly because the breast no longer produces milk and part of the tissue begins to shrink.
Health Tip: in order to make the s-shape longer, women can wear sports underwear to avoid breast sagging. The latest research shows that with ordinary underwear, with each step, the breast moves up and down by 5 cm, and with sports underwear, the movement ratio is reduced by 74%. If you can put lace on it, it will be the icing on the cake. White lace symbolizes nobility, purity and lethality to men.
Between the ages of 35 and 40, women should have a comprehensive breast X-ray examination and self-examination every month so that the disease can be detected as soon as possible.
40 years old
At the age of 40, the proportion of breast fat begins to rise, and sagging and relaxation become an irresistible process. At this point, women need to pay most attention to breast cysts. Fortunately, most of these lumps are harmless and do not increase the risk of breast cancer.
Tips for healthy living: standing up straight is a good way for women of this age to strengthen their breasts. As they get older, women's back muscles become more and more relaxed and are used to leaning forward when walking or standing. Many people say that their breasts are hanging on their belly button. At this time, strengthen the back muscles exercise, there are beautiful chest and shoulder curves. The easiest way is to straighten your chest, raise your head and stand up straight. In addition, breast expansion exercise is also conducive to breast health.
When choosing underwear, please choose a belt. It can effectively support the chest, decorate the waist, and give people the feeling of full grip. Perhaps the husband will marvel at this: the attractive "little waist spirit" is back.
50 years old
When you turn 50, years will leave a mark on your forehead, the corners of your mouth, the back of your hands, and even your breasts. The chest is getting more and more flabby, the rest of the breast is almost completely replaced by fat, and the fibers and semi-fibers are like elongated rubber bands. At this point, women need to worry about breast cancer the most. Studies have shown that every 38 people over the age of 50 are likely to develop breast cancer.
Health knowledge: weight is proportional to breast cancer. Women should always measure their waistline, preferably less than half of their height.
No matter how the body is deformed, buy underwear of the right size. Complex patterns and colors can not only reflect your maturity and wisdom, but also improve your self-confidence.