How exactly does it decide whether to have a boy or a girl, and what is the scientific basis?

How exactly does it decide whether to have a boy or a girl, and what is the scientific basis? I'm here to give you a little
science.

What determines the birth of a boy or a girl?

The birth of a boy or a girl is determined at the moment when the sperm and the egg are combined, the Y chromosome determines the birth of the boy, and the X chromosome determines the birth of the girl
.
Normally, humans have the X chromosome three times larger than the Y chromosome and carry more
genes.
As the Y chromosome has become smaller and smaller, the genes it carries are lost, but the genes that maintain male traits are unique
.
In addition, Y chromosome sperm are more sensitive to alkaline environments
.

Because the Y chromosome sperm is small, it runs fast, but due to the characteristics of the structure, the X chromosome sperm is more "solid", the Y chromosome sperm is more "fragile", and it is more sensitive to the stimulation of the external environment
, and we can master these tips.

Image source: Figureworm Creative

What factors affect the birth of boys and girls?

Next, let's talk about the factors
that influence whether to give birth to a boy or a girl.

1.
Physical and occupational factors

If the man stays up late for a long time, he is more tired, the occupational pressure is high, the fatigue is high, and the probability of giving birth to a girl is large
.
Such as professional drivers, pilots, surgeons, deep-sea divers, etc.
, if coupled with smoking, drinking and other adverse factors, the consequences are more serious, will damage male reproductive function
.
Under the condition of external stimulation or reduced resistance of the body, the Y chromosome is more fragile and vulnerable to damage, resulting in a relative increase in sperm on
the X chromosome.
The chances of having girls are particularly numerous
.

At the same time, if the pressure is too high, the number of sperm in men decreases; Women who are too nervous can produce a strong acidic environment that is not conducive to the survival of
Y sperm.
Therefore, people who are under too much pressure at work, stay up late, drink heavily, and smoke are more likely to
have girls.
In addition, some behavioral habits, such as sauna, hot springs, etc.
, or often wear tights and pants will make the scrotal temperature rise, resulting in a decrease in sperm count, Y sperm "bear the brunt of it", the chance is reduced, if you want to give birth to a boy, you must prevent the scrotal temperature from being too high, pay attention not to wear tights
.

2.
Age factors

The older the man, the greater the chance of having a "small cotton jacket", which is because as the germ cells age and germ cells age, the Y chromosome sperm is more sensitive
.
Similarly, the older a woman gets, the more alkaline secretions in the uterus decrease year by year, and the more chance there is for the X chromosome
.

3.
Acid-base factors and quality of sexual life

Sperm with X and Y chromosomes have different preferences, sperm with Y chromosome are more active in alkaline environment, and sperm with X chromosome are more active
in acidic environments.

The vagina of a normal woman is usually strongly acidic, which changes to acidity after the first orgasm and weakly acidic
after the second orgasm.
The semen is alkaline, when the woman reaches orgasm, it will enhance the alkalinity of the vagina, which is more suitable for sperm swimming with the Y chromosome, and the quality of sexual life is relatively high, which is conducive to making the Y chromosome "quick to the top"
.

Image source: Figureworm Creative

Factors that are conducive to giving birth to a boy or a girl

Finally, let's talk about the factors
that are conducive to having a boy or a girl.

Factors that are beneficial in conceiving a boy include:

1.
The time of intercourse is as consistent as possible with the ovulation time, the Y chromosome runs fast, first-come, first-served;

2.
Shape the alkaline environment and eat alkaline food;

3.
The man usually avoids wearing tight pants, hot showers, saunas, staying up late, drinking alcohol, and smoking;

4.
Pursue sexual quality
of life.

Factors that benefit pregnant girls include:

1.
Have intercourse about 2 days before ovulation;

2.
Acidic environment, such as drinking yogurt, etc
.

Of course, the birth of boys and girls is a very complex process, without medical intervention it is impossible to think of what to do, the above tips are only theoretical speculation and possibility
.
Whether it is a boy or a girl, a healthy baby is the most important, fathers-to-be and mothers, quit bad living habits, reasonable meal combination, start now