My arms around him yes
Every month, during each menstrual cycle, there is a very small window in which women can conceive. Most estimates are between five to six days, with the peak ovulatory window being a few hours at the end of the fertile window. The onset of a woman’s period is actually at the beginning of the ovulatory cycle, not the end. Though the exact length varies from woman to woman, the average menstrual cycle lasts about twenty-eight days. During the length of a woman’s overall cycle, she goes through three phases: menses, follicular, and luteal. Ovulation occurs between the follicular and luteal phases. The term “peak fertility” refers to a small window (usually thought to be anywhere between two to six days) when a woman’s conception rate goes up. Though technically every woman only ovulates one day a month, the chemistry of the vagina during this time facilitates sperm life (whereas in other phases, the chemistry produces a spermicidal effect). Sperm can actually retain the capacity to fertilize ova after five days at room temperature. However, unlike in many other species, human females are continuously proceptive and receptive to sex regardless of where they are in their monthly cycle.
Thus, Thornhill and Gangestad (2008) propose that women possess dual sexuality – estrous sexuality and extended sexuality – and that these two distinct forms of sexuality function during different periods of the menstrual cycle. Estrous sexuality (i.e., conceptive or reproductive sexuality) occurs within the fertile period of the menstrual cycle and female sexual preferences and motivations function to obtain “good genes” for offspring through mating with high-quality males. Extended sexuality (i.e., non- conceptive or non-reproductive sexuality), is complementary to estrous sexuality, functioning during unfertile periods to obtain non-genetic material benefits from mates in exchange for sexual access.
{ Journal of Social, Evolutionary, and Cultural Psychology | PDF }
