Do Menstrual Cycles Really Sync Up?
Have you had your period at the same time as your friends or family members? Is this a physiological effect or coincidence? Join Hank Green as he provides some insight on this phenomenon! ...
==========
We’ve all heard these stories: People that live together have their periods together. An average menstrual cycle lasts around 28 days: it starts with shedding built-up tissue in the womb, then prepping for pregnancy again. But one person might have a relatively long cycle, where someone else has a shorter cycle -- and they fluctuate month to month. So what’s the scientific basis for menstrual cycles syncing up … or is it just a myth? The first publication about this phenomenon in humans was in 1971, in the scientific journal Nature. Psychologist Martha McClintock was supposedly inspired by what she noticed as an undergraduate at a women’s school: All of her close friends seemed to get their periods at the same time. So, she did a study, and surveye...
==========
We’ve all heard these stories: People that live together have their periods together. An average menstrual cycle lasts around 28 days: it starts with shedding built-up tissue in the womb, then prepping for pregnancy again. But one person might have a relatively long cycle, where someone else has a shorter cycle -- and they fluctuate month to month. So what’s the scientific basis for menstrual cycles syncing up … or is it just a myth? The first publication about this phenomenon in humans was in 1971, in the scientific journal Nature. Psychologist Martha McClintock was supposedly inspired by what she noticed as an undergraduate at a women’s school: All of her close friends seemed to get their periods at the same time. So, she did a study, and surveye...
