Comportament, fertilitate si altele | Ruperea ciclului menstrual
Femeile traverseaza mai multe schimbari hormonale intr-o luna decat barbatii in viata lor. Ciclul menstrual este o masina bine uleiata (rezonabil) care implica multi hormoni diferiti care fac multe lucruri diferite, toate in numele perpetuarii speciei noastre. Nivelurile de hormoni se schimba zilnic (chiar pe ora), iar aceste modificari pot avea un impact semnificativ asupra comportamentelor femeilor.
Aceasta poate parea o afirmatie „duh”. La urma urmei, asociem schimbarile cheie ale vietii, cum ar fi pubertatea, sarcina sau menopauza cu ciudati comportamentale, iar aproape toata lumea este familiarizata cu terorile potentiale ale Sindromului Premenstrual (PMS). Cu toate acestea, ciclul menstrual obisnuit poate afecta comportamentul unei femei in moduri subtile, dar importante. Numeroase studii au sugerat ca schimbarile ciclice ale femeilor pot influenta ceea ce poarta, cat de flirtoase sunt, de cine sunt atrase si chiar atunci cand triseaza.
Un ciclu menstrual
Pentru a intelege cum functioneaza aceste studii, este important sa intelegeti elementele de baza ale ciclului menstrual. Ciclurile femeilor variaza in lungime, dar exemplul tipic este ciclul de 28 de zile. Daca numerotati zilele ciclului, debutul perioadei este Ziua 1.
Zilele 1-14:
In timpul fluxului menstrual, nivelul de estrogen si progesteron este cel mai scazut, la fel si fertilitatea. Cu toate acestea, dupa cateva zile de sangerare, estrogenul incepe sa creasca si mucoasa uterina incepe sa se ingroase pentru a se pregati pentru a gazdui un ou fecundat. Nivelurile de estrogen cresc ciclul mediu cand apare ovulatia (eliberarea unui ovul). Fertilitatea este la cel mai inalt nivel aici si toate aceste etape au loc cu speranta de a atinge sarcina.
Zilele 14-28:
Odata ce ovulatia a aparut, estrogenul incepe sa scada in timp ce progesteronul creste pentru a hrani orice ovul fertilizat. Daca ovulul nu este fertilizat, atat estrogenul cat si progesteronul incep sa scada si nivelul de fertilitate scade. Cand nivelurile devin suficient de scazute, acest lucru semnaleaza corpul sa menstrueze, ceea ce varsa oul si mucoasa uterina. Apoi ciclul incepe din nou.
Cu alte cuvinte, ciclul unei femei are atat faze fertile, cat si fecunde si daca femeia se afla sau nu in fazele mai fertile ale ciclului ei pare sa aiba un impact semnificativ asupra comportamentului ei.
Arata-mi niste piele, iubito
In perioada fertila din ciclul unei femei, nu numai ca organismul se pregateste pentru posibilitatea unei sarcini, se poate imbraca si intr-un mod care ar putea creste sansele intamplarii. Intr-un studiu realizat in UCLA, cercetatorii au facut doua fotografii cu femei tinere, una in faza ciclului mediu fertil si cealalta in faza cu fertilitate scazuta care apare doua saptamani mai tarziu. Ambele fotografii au fost prezentate barbatilor si femeilor, carora li s-a cerut sa selecteze poza in care femeia incerca sa para mai atractiva. In 60% din cazuri, au ales femeia in faza ei fertila.
What were the differences in these two photos? In those taken during the fertile phase, the women were more likely to dress in a way that’s attractive to men. For example, they showed more skin in their clothing choices, they wore more jewelry, and overall seemed to put more effort into their clothing and appearance.
Hello, Mr. Right Now
During ovulation, not only are women more likely to dress in a way that makes them more attractive to men, they’re more likely to don behaviors that interest men. To some extent, the behavior could be explained by the attention that women get from men during their fertile phase, but a study published in Psychological Science found that women’s behavior does change during that time of the cycle.
The study examined undergraduate females as they interacted with male actors who were trained to behave like the stereotypical fling (confident and exciting, but unreliable) as well as the stereotypical “safe” guy (warm and stable, but less confident and exciting). The women were told that the “exciting” and “safe” men were identical twins and that they would interact with each.
Results showed that the women’s responses to both men were about equal during the low-fertility phase; however, when ovulating, the women displayed more interest in the exciting, short-term fling guy. The women also flirted more overall. This suggests that during the fertile period, women may not only behave in a way that could lead to sex but may do so with men who show no desire for a long-term relationship.
The Forbidden Fruit: Lusting After Other Men
Ever find yourself imagining hot sex with someone other than your partner? Yeah, so have other women. And where you are in your cycle might be at least part of the reason for that.
Pillsworth et al. studied women in long-term relationships and who were not on birth control pills. That latter thing is important because the Pill directly affects women’s hormone levels and prevents ovulation, which can influence behavior.
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They found that these women had an increased desire for men other than their partners during mid-cycle when ovulation occurs and women are most fertile.
Not only are women more likely to fantasize about having sex with other men during the fertile period of their cycles, they may be more likely to act on these desires during that time. Many people tend to think of men as the infidels of the animal world, but science knows better: women cheat too. And if she does cheat, not only is it more likely to happen during her fertile phase, but she’s more likely to cheat with a man who has traditionally masculine features (e.g. a deep voice, strong jaw).
There are many possible reasons for these findings. Evolutionary psychologists would offer that women are searching for the best possible genes in order to reproduce and create healthy offspring. However, it’s more likely that fertility merely makes women hornier as a way to ensure sex and reproduction. And when you’re really horny, you may crave some big, thick-browed dude with all that masculinity or some random guy you have no long-term interest in. After all, the human species cares more about ensuring its own survival than anything else.
But, in the end, the observations found in all these studies don’t apply to every woman or every month.
Many, many factors contribute to a woman’s behavior, sex drive, and whom she chooses to sleep with. Yet, when Day 12 comes around and you find yourself choosing that short skirt, you’ll know why.
