Women's menstruation syndrome is aware of this: you and your sister, or your roommate, or lover, or mommy, will get your time at the same time. It does not always happen, but it gathers attention. Female rats living in the same space ovulate at the same time. The monkey 's menstruation is synchronized with the full moon (7). All of these are the same patterns in our heads or as humans. The most clear argument for the simultaneous occurrence of menstruation is that women of two different cycles never synchronize because the length of the menstrual cycle varies from person to person (2).
As with the origins of many excellent scientific discoveries, this story starts with a series of accidental events. In the 2006 chapter Gordon Gallup and Rebecca Burch co-discoverers of system evolution psychologists at the State University of New York explain as follows. Human semen, especially Gallup and Birch, found a series of interesting data in the mid 1990s. It showed that lesbians who had sex who lived with a heterosexual woman did not show up well. "McClintock effect" is the one in which menstruating cohabiting women (and many other kinds of women) are synchronized. The subtle olfactive cue (called pheromone) is known to regulate the synchronicity of menstruation, so the author wrote:
... Lesbians are more intimate and intimate than daily ladies living together. What is lesbians gay women are promoting menstrual synchronization, or interdiction of menstrual synchronization? One of the distinguishing features of heterosexual women and lesbians is the presence of semen in the female reproductive tract. Lesbians play sex with sex. Perhaps you've already seen that leading position. Gallup and Birch believe that certain chemicals in human semen that are absorbed from the vagina affect women's biology and that asexual scent women will smell different from women who are not like that I will. Menstrual cycle menstruation of women living together with a smell of women (even considering existing literature on menstrual synchronization, their expectations are certain).