I guess I will be the first person to take this seriously, so here goes.
There also have been studies that women who live together, their cycles change so they menstruate at the same time. It's an instinctive way to compete for mates. You also have the phenomena of women who are breast feeding, starting to leak as soon as they hear a baby cry, even if it isn't theirs.
There is alot about biology we still really don't know.
>>>You also have the phenomena of women who are breast feeding, starting to leak as soon as they hear a baby cry, even if it isn't theirs. >>>
I can state first hand that this is true.
Also about the women menstruation cycling together.
I have heard this.
I have 3 daughters, born in a span of 3 years.
So - I'll have 4 women in the house.
Yes, I am very glad to have a mini-ranch, so I can work outside.
There was another study about what type of men women prefer based on where they are in their cycle. When they are ovulating they prefer real manly men. When they aren't they prefer the more sensitive type.
I don't get it? Seems like if they had different fertile times the chances of finding a mate would be easier. Less competition.