The body position that is beneficial to giving birth to a boy determines the Y sperm of giving birth to a boy, which is more suitable for swimming in an alkaline environment. Although it swims fast, it lacks endurance. Although X sperm swims slowly, it survives for a long time and can adapt to acidic environment. According to the different vitality and adaptability of X sperm and Y sperm to reproductive environment, we can judge the influence of the posture and depth of sexual intercourse on boys and girls. If the ejaculation position is shallow, it takes a long time for sperm to reach the uterus. On the contrary, the position of ejaculation is deeper, and sperm can reach the uterus earlier.
Therefore, if a couple wants a little prince, they will generally adopt a backward posture, a female upper position, and some leg bending postures, so long as they can shorten the vagina, they can achieve better results. Because the time for female uterine cavity to secrete alkaline liquid varies from person to person, it usually appears after 2~3 times, so foreplay should be carried out as much as possible to adjust the birth of boys and girls.
Injecting semen as deep as possible into the vagina during sexual intercourse will help Y sperm appear near the cervix and reduce the difficulty of its long-distance travel through cervical mucus. Moreover, deep penetration during sexual intercourse will lead to the appearance of a woman's orgasm, which will make the cervix secrete more alkaline secretions, help Y sperm survive and improve the chances of having a boy. If you want to have a little princess, you must shoot semen into the shallow layer of vagina, deliberately increase the difficulty of long-distance crossing of Y sperm, let X sperm be far ahead, and combine with egg cells first.
Prepregnancy preparation for boys 1, determination of ovulation period
From the day I want to have a boy, I will continue to measure the basal temperature correctly as required. The correct way to measure basal body temperature: don't get up after waking up every morning. It is best to measure body temperature with your mouth at the same time and place (if your mouth is under your tongue and closed).
Under normal circumstances, women's body temperature is always around 36.5 degrees before ovulation; When ovulating, the body temperature drops slightly, generally about 0.2 degrees, rises to about 37 degrees after ovulation, and lasts until the next menstrual cramp, and then returns to the original body temperature level. If the basal body temperature of three menstrual cycles is measured continuously, a more accurate ovulation date can be inferred.
However, even if the basic temperature measurement is correct, some people still don't know the day when the body temperature drops, so try to check the cervical mucus at the obstetrician on the possible ovulation day to confirm whether this day is ovulation day.
Step 2 supplement folic acid
In the first three months of pregnancy, prospective parents should consciously supplement folic acid and eat more foods rich in folic acid in their diet, such as lettuce, spinach, animal liver, soybeans and walnuts. In addition, folic acid tablets and multivitamin tablets can be taken under the guidance of a doctor.
Step 3 supplement calcium
Take 4 natural calcium tablets every day from the third month before pregnancy. After taking natural calcium for 2 months, I went to the obstetrician for ultrasound diagnosis and cervical mucus crystallization on the ovulation day of the third month to determine whether to continue taking natural calcium.
4. Prospective parents control their diet
Women's vaginas are generally acidic. If alkaline substances are secreted during orgasm, it is more suitable for Y sperm to survive and it is easier to have boys.
Therefore, if you want to have a boy, men should eat more acidic foods such as lean meat and animal fat, while women should eat more alkaline foods such as vegetables and fruits.
5. Control the time of sharing a room.
When you want to have a boy, the thicker the semen, the better, so make love on the second day after menstruation and every other day, and then abstain from sex from the second time until the scheduled date of conception, so that you can shoot a lot of energetic Y sperm on the day of ovulation.