According to some data, men who smoke and drink too much will have lower sperm motility or even lower sperm count. This is because nicotine and alcohol have a serious impact on the body, which will lead to physical decline and sperm quality will also be affected. Moreover, if men have the habit of excessive smoking and drinking for a long time, the chances of giving birth to girls are much greater than those of giving birth to boys, because alcohol and nicotine have an effect on the Y chromosome. Suggestion: We must ensure healthy living habits, especially during pregnancy, and don't smoke and drink too much to avoid the influence of second-hand smoke on the wife and fetus after pregnancy.
Second, long-term exposure to high temperatures.
Many men are exposed to high temperature for a long time because of work, which will also lead to an increase in the probability of giving birth to girls. Because high temperature environment is lethal to sperm, especially affecting Y chromosome, the probability of having a boy naturally will be much lower. Suggestion: If you must stay in high temperature environment for a long time, you can strengthen physical exercise to improve sperm quality, or consider changing a more suitable job, especially for pregnant men, and you must avoid the influence of high temperature environment on sperm.
Third, the pressure is even greater.
If a person is under great pressure, it will not only affect his mood, but also lead to a decline in his physical fitness. If he is a male, long-term exposure to high pressure will also affect sperm quality, and the probability of giving birth to a girl is greater than that of giving birth to a boy, which may even lead to difficulties in pregnancy. Suggestion: Relax properly and don't put too much pressure on yourself, especially when you are pregnant. It's best to let nature take its course and let yourself relax, without so much pressure, and at the same time relax at work.
Fourth, older.
With the opening of the second child policy, many elderly couples also plan to have a second child, especially some people have a daughter after the first child, and the second child prefers to have a son, so that both children can be satisfied. However, for elderly couples, this is often counterproductive, and they may have another daughter. This is because the probability of older boys and girls is higher. With the increase of age, not only the sperm quality will decrease, but also the Y chromosome will decrease. Suggestion: Older couples must carefully consider having children, especially check their physical condition in advance, and don't take having boys and girls as the purpose of having a second child. Otherwise, after the child is born, it will often be somewhat lost.
Fifth, there are many sisters.
In life, it is not difficult to find that some families have several boys in a row and some families have several girls in a row. This situation is not uncommon. Other families have only one boy, the rest are girls, and most men have daughters. This is because if there are more brothers and sisters, the probability of X chromosome is higher, and it is easy to have girls.
Sixth, regular high-intensity fitness.
Some men not only have very healthy living habits, but also insist on exercising, and some even are fitness instructors. Such people are often more likely to have daughters. Because of long-term exercise, the muscle contains lactic acid, and the constitution will be acidic, so the vitality of Y chromosome in natural sperm will decrease, and the probability of having a girl will be greater. Suggestion: Exercise must be moderate, not too intense. If you train hard for a long time, it will not only affect the probability of having boys and girls, but also do harm to your health. Once you stop exercising, fat will accumulate very quickly. But you can't fish for three days and dry the net for two days. If you can't stick to it, it's meaningless.