Preparation:
1. Correctly filled out a daily basis thermometers to help determine ovulation, not sure when, to the hospital for an examination of cervical mucus;
2. Can not be determined before ovulation in the 2-3, to use condoms contraception;
3. The best in sexual intercourse two days before ovulation;
4. To take the girl to sexual intercourse position (that is inserted into the penis can not be too deep);
5. Sexual intercourse, sexual life to stop a week.
Principles:
First, stop having sex three days before ovulation
Usually on the day of ovulation, women will be secreted in the Duoliang and transparent mucus, which can prevent sperm mucus into the uterus, only stay in the vaginal acidity, in the acidic environment is not suitable for the growth Y sperm, the sperm was made Y Eliminated, leaving X sperm, such as uterine mucus dissolved, X sperm and eggs can be successfully combined, and the Health and female babies.
Because the sperm in the womb have three days of survival, so if we avoid the fertilization on the day of ovulation, it is necessary to ovulation, three days before the cease Xingfang.
Second, to show vaginal acidity
X, Y sperm pH different environment, not the same as the speed of swimming; Y sperm in alkaline environment comparison is swimming, and the X sperm in the acidic environment more active. Therefore, if both husband and wife want the girl, can use the X sperm preferences acidic nature of the spatial environment into the vagina will be the acid can increase the possibility of Health and daughter. The woman's sex may also, to a small number of clean-water and diluted acetate, washing women vagina, vagina to show acidic environment, women contribute to health.
Third, the woman in Xingfang, try to avoid high tide
Women are usually the normal vaginal showed strong acid (ph3. 8 ~ 4. 2), for the first time after the climax acid (ph5. 2 ~ 6. 0), the second high tide, will change into a weak acid (ph6. 3 ~ 6.8). Because the semen is alkaline (ph7. 4 ~ 7. 8), and the climax, will enhance the basic vagina, coupled with the alkaline environment more suitable for the growth of Y sperm, so if people want to be her daughter's health as much as possible To avoid high tide, reducing the vagina to enhance the basic opportunities.
Fourth, the frequency of sexual intercourse should be frequent
Health daughter to the husband and wife, in the last Xingfang, the frequency of sexual intercourse without restraint. Because the more the number of sex, can reduce the number of Y sperm, but although the frequency of sexual intercourse without restraint, it should not be excessive, so as to avoid excessive consumption, physical.
5, posture
Health daughter to the sex couples in the process, can take as much as possible into the shallow gestures. On the man taken into position, fired in the sperm must stay within the acidity of the vagina for a period of time, so that Y sperm, as far as possible be eliminated, leaving only X sperm.
6, from restaurants to make physical
Health female baby to the couple, the woman may try to increase the acidity in the blood, this can also increase the acidity of the vagina so that is conducive to health female babies. So the woman can try to eat fish, meat, protein and sour fruits, physical side acid, and alkaline, you can eat the food.
Acidic foods: Loach, ham, beef, pork, chicken, fish (sea fish, tuna, Chang, salmon, salmon fish, mackerel, bonito, Changyu, etc.) Muyu, Luanbai, the fruit acid ( Tomatoes, oranges, strawberries, grapes, apples, pineapple, etc.).
Basic food: vegetables, fruits, milk, flour products, tea, kelp, marine algae, iodine, calcium, vitamin D.
In the attention of all the above problems, the girl would like the opportunity will be greatly increased.
