You want a lively and active baby boy, or a beautiful baby girl, not only let God make the decision, since every father-to-be, mother-to-be have expectations and ideas about the little life, it will be their own hands-on, to do a master for the child’s gender! The mystery of having a boy or girl 1, a battle for eggs You should never think that the birth of a little life in the man after ejaculation is a great success, the next process of hard work, perhaps thousands of times more than sex on the battlefield. Every time you have sex, there are billions of sperm crossing the vagina, cervix and uterine cavity to an egg, and just as males have had to compete in courtship for billions of years, each sperm has to face many rivals and undergo a powerful test from the egg – the “zona pellucida “These are the two lines of defense that prevent the sperm from penetrating the egg. The sperm will release three hydrolytic enzymes such as radial crown penetrating enzyme, hyaluronidase, and proteolytic enzyme to break through the egg’s defenses, so that the strongest sperm will be the first to go and become the winner of the union with the egg. After the egg is penetrated and fertilized by the first sperm, it will automatically release a substance to stop other sperm from entering and start to grow intently in the human body. 2. Y sperm = boy? X sperm = girl? Among the 23 pairs of chromosomes in the human body, one of them is the sex chromosome that determines the sex of the embryo. A woman can only produce an egg with sex chromosomes, but a man can produce sperm with two sex chromosomes, one with sex chromosome X and one with sex chromosome Y. When the egg is combined with the former, the fertilized egg is XX type, giving birth to a girl, and vice versa, the fertilized egg is XY type, giving birth to a boy. Therefore, in the battle for the egg, whether the X or Y sperm wins becomes the key to having a boy or a girl. 3, X sperm like acid, Y sperm like alkali A, the number of Y sperm is high, but the resistance is weak; X sperm number is low, but the resistance is strong. B. In the acidic environment of the vagina, the activity of both X and Y sperm will be inhibited, but the resistance of X sperm is strong, so X sperm has a better chance to combine with the egg and more likely to have a girl. C. In the alkaline environment of the vagina, both X and Y sperm have good motility, but Y sperm have a greater chance of having a male child because of their “sperm power”. How to have a boy or a girl? The key is to take advantage of the changes in vaginal pH. There are many ways to do this, but you need to be prepared beforehand, and their chances of success are around 80%. The closer you get to the day of ovulation, the more alkaline the vagina and uterus will be, so the higher the chance of Y sperm and egg combination, the more likely you will have a boy, and vice versa, the further away from the day of ovulation, the more likely you will have a girl. The formula for calculating the day of ovulation: The first day of ovulation = the shortest menstrual cycle days – 18 days The last day of ovulation = the longest menstrual cycle days – 11 days Before using this formula, I have to observe and record my menstrual cycle for 8 times in a row to get its longest and shortest days, and substitute the numbers to indicate the beginning and end of my “ovulation period” respectively. The beginning and end of the “ovulation period” are indicated by the numbers. (The menstrual cycle is calculated from the first day of this menstrual period to the first day of the next menstrual period). For example, if your longest menstrual cycle in the previous 8 months was 30 days and the shortest was 28 days, substitute the formula as follows: First day of ovulation = 28 days – 18 days = 10 days Last day of ovulation = 30 days – 11 days = 19 days If your menstruation is very regular, assuming 28 days, then you can set both the longest and shortest days of your menstrual cycle as 28 days and substitute the formula to calculate your The “ovulation period” is: the 10th – 17th day of the current menstrual flow. 2. Acidic and alkaline foods Using food therapy can control the vaginal pH. If you want a male baby, you should eat more alkaline foods before conception, and vice versa, if you like a girl, you should eat more acidic foods. Does acidic food mean food that tastes sour? Of course not. A tomato tastes sour enough, right, but it is an alkaline food. To determine whether it is an acidic or alkaline food, it lies in whether the result of metabolism of this food in the body is acidic or alkaline, which is a physiological concept that has nothing to do with taste and chemical concepts, so let’s see what are really acidic and alkaline foods. Acidic foods: rice and other carbohydrates, meat, poultry, aquatic products, eggs, peanuts, walnuts, etc. Alkaline foods: vegetables, root vegetables in grain (such as potatoes, sweet potatoes), fruits, milk, nuts in chestnuts, almonds, etc. 3, sex position and ejaculation time A Japanese high school biology teacher, Mr. Supervisor see as early as 1966, found that as the prelude to intercourse unfolds, the vagina gradually from acidic to alkaline, when the vagina begins to excite the initial period, the pH of the vagina is still 6.4, within the acidic environment, when reaching orgasm, the pH of the vagina will reach 8.4-8.8, showing alkaline, after this, and gradually turns to acidic. Therefore, if a husband ejaculates during his wife’s orgasm, there is a 90% chance that she will conceive a boy. So, to get a cute male baby, have more foreplay. On the contrary, if you want a beautiful and moving female baby, the couple should miss the orgasm time and the husband enter the wife early to ejaculate. Another mystery is that the position of sex can also determine the sex of the future little life. If you want a boy, you should try to create conditions for Y sperm to swim less distance, so choose a position that combines deeply with the loving couple. For example, the flexion position and the back position. The flexion position is the man on top of the woman, the wife’s legs as far up as possible, bending knees, or even on the husband’s shoulders, so that he deep inside. Or in the back position, the wife lies on her back or kneels on the bed while the husband holds his wife’s waist and enters from behind. If you want a cute little princess, it’s time to go shallow, as this will allow the Y sperm to die halfway and create more opportunities for the X sperm. You can take the flat and side position, let the wife lie on her back, legs together, straight, the husband on top, the weight of the body as far as possible not to press on the wife, the entry will not be too deep; side position is the husband and wife face to face side lying combined position, you can also achieve the effect of ejaculation in the shallow. 4, to vaginal bath Many years ago, the German medical doctor Utah Burga in order to treat infertility patients, the use of 2% bicarbonate of Na solution to douche the vagina, the unexpected harvest is that those women who received treatment, most of the births are male babies. In the first year of treatment, there were 53 successful pregnancies and all of them were male babies. So, douching the vagina with bicarbonate of soda solution became the classic method to induce the birth of a boy. It is no coincidence that to have a girl, you can choose to douche the vagina with acetic acid solution, this is to make the acid-fearing Y sperm less active. Sex is best scheduled 2 days before ovulation day, when the vagina tends to be weakly acidic but weaker than the normal state, so it needs to be artificially strengthened with vaginal acidity. Flushing can be done about 15 minutes before sex, for 1-2 minutes. Tips:Where to buy both solutions Sodium bicarbonate solution and acetic acid solution are available in hospitals. You can also make your own acetic acid solution by buying a bottle of white vinegar, preparing an acetic acid solution with a 5% concentration, i.e. 50 ml of white vinegar in 1 liter of water, and douching with a vaginal douche. Tips:Other factors that affect the birth of boys and girls: 1, metal elements The University of Paris biochemist Professor Storgowski as early as 1963, the frog and sodium, potassium, calcium, magnesium ions to do experiments with sodium, potassium as a group, calcium, magnesium as a group, were placed in two pools to incubate frog eggs. It was found that most of the frogs hatched in the pool with sodium and potassium ions were male, while most of the frogs in the pool with calcium and magnesium ions were female. Based on this principle, Professor Storgowski also developed a recipe to control the sex of the fetus in 1972, he conducted a secret experiment with 38 volunteer mothers-to-be, and all but six cases failed. The reason for the failure of those 6 cases was that the diet was not strictly followed. 2, nutrition Scientists in 1884, based on numerous observations and statistics, pointed out that women in malnourished conditions more often give birth to boys, and vice versa is more likely to give birth to girls. Specifically, when the proportion of grains and vegetables in the food is large, it is easy to have a boy. If the proportion of eggs, fat, meat food is significant, it is easy to give birth to girls. 3, family genetics Some scientists have done special family genealogy investigations. In Britain and France respectively, there are two very special genealogy, the British genealogy of the 10 generations of 35 children, 33 are boys, only 2 girls, and 2 girls out of 1 died young, and 1 is a hermaphrodite. Scientists’ explanation is that because most of the male sperm in the family is Y sperm, while X sperm are rare or weak, so only boys can be born. Another French genealogy is the opposite, with 72 children born in three generations all female. Scientists believe that this is inherited through the women, whose eggs can only combine with X sperm and not Y sperm, and so give birth to clear female babies. It is recommended that those who want to have a boy should first check the quality of their sperm and take medication to improve the quality of their sperm, especially sperm vitality, and the woman can also take medication to improve her libido level. With the above methods, you will be able to have a “baby with a handle” and a super smart baby as you wish.