1. The missionary
Many experts believe that the missionary position, that is, when man is lying on women, is particularly conducive to fertilization. But no scientific study has so far confirmed this hypothesis.
We start from the idea that in this position, the man can penetrate very deeply the woman and the sperm is ejaculated closer to the cervix. The woman can increase his side's chances of fertilization by slipping a pillow under your buttocks so that a maximum sperm enters the uterus.
The downside is that it will remain at least half an hour in this position for it to be really effective ...
2. The Doggy style
For those who are bored in the missionary position, they can opt for doggy style, where the man takes the woman from behind. Again, the sperm is deposited "near the goal," regardless of whether the man is lying on the back of the woman or kneels behind her.
Recent studies have revealed that it is not only the orgasm of the man who plays a role in fertilization. The orgasm of the woman, that is, regular contractions of the vagina, allows achieving faster sperm from the cervix
3. A horse!
Conversely, some positions are known not to favor fertilization. When both partners are sitting or when the woman straddles the man, the sperm must fight against gravity to avoid being expelled prematurely from the vagina.
4. Boy or girl?
Scientists, themselves, consider unanimously that no particular position is able to determine the sex of the child.
At one time it was believed that the sex of the child depended on the point in the cycle where we made love: before or after ovulation. Today it is estimated that the 6 days before ovulation are the most fruitful and after he no longer goes much.
The observation of the waking temperature allows to know the date of ovulation. The temperature far below 37 °, reduces the eve of ovulation and slightly increases the same day.
Some claim that has more chance of having a boy making love right before ovulation. Sperm carrying the Y chromosome (thus the giver male) moving faster than the sperm X. against, they have a shorter lifespan, so they can not wait very long at ovulation ovarian.
Conversely, the longer the time between intercourse ovulation is, the more the chances of having a girl growing. This method is reliable up to 75%.
Very recently, US scientists have managed to score sperm with a fluorescent dye according to their X or Y genetic Then they have them sorted in order to carry out artificial insemination. The results of these experiments showed that 85% of inseminations made with the X chromosomes have actually led to fertilization, against only 65% of inseminations made with cell Y.
- To have a girl
Do love a full moon night, the woman to ride her partner. Before conception, the man and the woman should eat mostly fish and vegetables. All without salt. During pregnancy, high chocolate consumption by women is recommended.
- To have a boy
Make love when the moon is in crescent on odd days of the month. Prospective parents should eat lots of red meat, especially the savory dishes. Sweets are prohibited.
- And if we let nature take its course?
If you do not want to apply any method and leave things to chance, it was statistically more likely to give birth to a boy than a girl: 51.2% of babies are boys against 48.8% girls. So far, neither revenue nor grandmothers scientific theories have changed nothing.
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