Onan did not want her to become pregnant, since the child that was born would be the heir of the brother, and therefore poured the seed on the ground. On behalf of this biblical character arose the concept of "masturbation", which unreasonably called masturbation.
The essence of this, how to prevent interrupted intercourse, is that in order to prevent the seed from entering, or semen into the vagina of the woman, which can lead to unwanted pregnancy, the man stops intercourse before the very outflow of sperm, taking out a member from the vagina.
The technique of interrupted intercourse requires special attention of the man to his sensations. A man with this technique should catch the first signs of the onset of orgasm and the beginning of the eruption of the seed.
With this method of preventing unwanted pregnancies, the nervous system strongly strains in men. In his brain, there is a so-called "skibe". On the one hand, in the course of sexual intercourse, there is an increase in excitement and the brain senses the increase in pleasure and seeks to prolong it as long as possible, and on the other hand, the man with such an increase in excitement should in time determine the approach of ejaculation and remove the penis from the vagina of the woman in time to the sperm did not enter the vagina.
In general, in fact, an interrupted sexual intercourse has a negative effect on the general condition of a woman, however, as well as on the condition of a man. But this influence is individual and depends on a woman's sexual need. In this case, the following options are possible:
1) A woman is frigid, she lacks not only the ability to experience sexual satisfaction, but also the sex drive itself. She has no increase in sexual arousal, and she does not have a tide of blood to the genitals and their swelling. Such a woman does not care at all when the intercourse is interrupted. In this case, sexual intercourse does not adversely affect the woman's condition.
2) A woman is overexciteable and can experience orgasm before interrupting sexual intercourse. In this case, the interrupted sexual intercourse also does not adversely affect the general condition of the woman.
3) The most common case, when the sexual arousal of a woman and a man grows almost simultaneously, but an orgasm in a woman occurs somewhat later than a man. Early termination of sexual intercourse in this case and extraction of the penis from the vagina leads to the fact that the woman does not experience sexual satisfaction. Her genitals remain swollen, blood does not flow from them right away, a woman often experiences unpleasant sensations, sometimes pain in the abdomen and genitals, until the filling with blood of her genitals will not fall off. What happens sometimes a long time.
Interrupted sexual intercourse, as usual, begins with the introduction of the penis into the vagina, and then from shallow, at first rather slow frictions (movements of the penis). In this case, the woman expects a deeper penetration. This way of movement of the penis in the vagina of the woman most arouses her, makes her active in the process of sexual intercourse. This rhythm of the movements of the penis can change to a faster one, with a deep penetration and a return to the previous rhythm. During sexual intercourse, the rate of movement of the penis in the vagina is accelerated, the depth of penetration of the penis increases, its movements become deeper, with rotation in the vagina. In the final part of sexual intercourse, frictions are performed at a fast pace, but it is also possible to slow the frictions, which increases the activity of a woman, increases her impatience and excitement, if this does not interrupt the orgasm that has begun in a woman. She experiences an orgasm if the penis remains in her vagina. This method of sexual intercourse is possible if a man does not suffer from premature ejaculation and can control the onset of orgasm.
If a man or woman has not experienced sexual satisfaction during interrupted intercourse, they can reach it in another way that is acceptable to them. For example, with the help of oral or other caresses. Women often resort to blowjob - oral caresses of the penis - in the final phase of sexual intercourse in order to prevent unwanted pregnancies, when a man pours his sperm into the woman's mouth.
A man can also deliver sexual satisfaction to a woman after sexual intercourse by oral and other caresses of her genitals if she has not experienced orgasm for one reason or another during it. Such a most excitable erogenous zone in a woman is the clitoris. Careful men give the woman the opportunity to experience an orgasm by irritating the clitoris with her hand or mouth (kisses of the genitals, licking and sucking the clitoris).
Literary evidence suggests that interrupted intercourse, as a method of preventing unwanted pregnancies, is not effective because the risk of unwanted pregnancy is quite high. This is due to many factors. In particular, with the ability of a man to control ejaculation. Thus, it is unsuitable for premature ejaculation.
The negative aspects of the use of interrupted intercourse in pairs are also noted. Namely: stagnation in the genitals and organs of the small pelvis in the case of lack of sexual satisfaction, which can lead to inflammatory diseases of the internal genital organs of a man and a woman.
Summarizing the results of how they are protected by interrupted intercourse, it can be said that this method is not a sufficiently effective method of preventing unwanted pregnancies. Its systematic use can lead to diseases of the sexual sphere, both women and men.