Humanity believes that because women do is a stranger to aberrant behavior. In fact, choose to be sick once a month bleeding from a wound that is right in your vagina, extremely unpleasant thing that causes disgust in others.
But the truth is very different. In fact, in a perpetual state may be receptive endometrium, armed and ready to receive the embryo throughout the year until conception takes place ... why take the trouble to arm themselves and get rid month after month?
According to anthropologist Helen Fisher, to all the biological possibilities feasible, that of menstruation there turned out to be biologically the most astute, for two reasons:
First, it would be very costly for the body to maintain a protein-rich endometrium constantly renewed over a month. Putting it in a bit just to be ready for ovulation, the female body conserves resources and nutrients.
Secondly, it would be too expensive to maintain the endometrium biologically clean and like new, no bacteria or possible infections. Assemble them from scratch every time guarantees absolute hygiene. This theory - launched in 1993, Margie Profet, a biologist at the University of California at Berkeley, says that menstruation fight infections and cleans the entire female genital tract by blood cells called macrophages to "eat" any bacteria that crosses on their way, keeping the uterus always immaculate hygiene.
But the truth is very different. In fact, in a perpetual state may be receptive endometrium, armed and ready to receive the embryo throughout the year until conception takes place ... why take the trouble to arm themselves and get rid month after month?
According to anthropologist Helen Fisher, to all the biological possibilities feasible, that of menstruation there turned out to be biologically the most astute, for two reasons:
First, it would be very costly for the body to maintain a protein-rich endometrium constantly renewed over a month. Putting it in a bit just to be ready for ovulation, the female body conserves resources and nutrients.
Secondly, it would be too expensive to maintain the endometrium biologically clean and like new, no bacteria or possible infections. Assemble them from scratch every time guarantees absolute hygiene. This theory - launched in 1993, Margie Profet, a biologist at the University of California at Berkeley, says that menstruation fight infections and cleans the entire female genital tract by blood cells called macrophages to "eat" any bacteria that crosses on their way, keeping the uterus always immaculate hygiene.
But there is another reason that menstruation is a clever biological system. And it is the best exercise prepartum nature gives us. Let
history in pitecantropus era of our grandmothers went from branch to branch through the trees, or on all fours on the floor, giving birth to children who were born as monkeys developed full-fledged, they could carry on their backs because they clung to their fur. When the climate changed and food scarce, there was no choice but to lose the trees and go plains in search of food. Not abundant food and had to dig the earth to extract the roots, and go long stretches to find something to fill their bellies. These years of having to walk forced the females have to stand up on two legs, to carry the load leftover food and also with the children, carrying things around on site.
upright position had the advantage of hands-free (once served to move) to carry things and babies. So it is assumed that the first females were walking, having to go without the baby stopped breastfeeding but to walk upright so it was necessary to flatter hips. The iliac crests changed back center of gravity and allowed human females were bipedal ... deque cost the birth canal narrows, having to give birth to more premature babies and less developed. Newborn babies of today have not lost reflection of hard to grasp fur mom. Try removing your finger from the fist while they sleep, to see if you can. But delivery has been hampered by walking on two legs. So, to get trained for childbirth must be practiced throughout life. In menstruation, the uterus does jerking and swaying to expel the endometrium, the same as labor contractions, but on a small scale. We may hurt and upset, but think it is a warm-up prior to when you live birth. Moreover, during the pregnancy itself may be small contractions well before the ninth month. These contractions really scared some moms, but are merely warm-up contractions Braxton Hicks calls (name of English physician who discovered them in 1872) which serve to form the uterus in preparation for your big day. Many doctors prescribe antispasmodics to take them off, but if there is no risk of premature delivery, you should let happen. If you think being a mom, think with each menstrual pain is the way your uterus is trying the movements necessary for delivery to happen. Childbirth is a fairly quick process, it does not hurt as much as the previous contractions to expel the baby's body. It is not known what triggers the female body in order to say "the baby and must leave, empujémoslo out." But antepartum uterine contractions - which sometimes stretch for 12 hours - are identical to the menstrual, multiplied by ten, because the uterine size is ten times more to hold the baby. The good news is that if you've had menstrual cramps, labor does not scare you, but you will be an old familiar feeling.
course, when the baby comes, do not say: "Oia, a clot with eyes!"
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