karenR answered Tuesday December 5 2006, 4:02 pm: I would have to say yes.
Now I couldn't find anything online and my book is packed away, but this is what I learned in psych
behavior class...
Women who live close to each other, like sisters and mom, dorms and even on the same floor of apartment complexes, will all have their periods at around the same time. I sure wish I could find something about it for you online because I can't remember why. :) [ karenR's advice column | Ask karenR A Question ]
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