Why is a woman's

[Paddy]

...menstrual cycle the same length as the moon's cycle?

Is there some biological or evolutionary reason for this?

David Attenborough.

The human species are one of the few breed of primates that spent their time hunting by day and nurturing the family by night. Wild animals would attack at night but a full moon would keep them away, this would be the natural time of the month for copulation thus the fertile time of the mensal cycle would naturally occur, Darwin first studied similar habits with indigenous humans on the island of Phuket.

[cailin maith]

Lucky pope. My favourite bit. Aren't lots of women together supposed to synchronise? Perhaps they synchronise to the moon. Like nuns. Or werewolves. Not much difference, I loath nuns.

Yep, even when you are on the pill you move closer to other women - most of us in the office are on at roughly the same time.

[DaveB]

Yep, even when you are on the pill you move closer to other women - most of us in the office are on at roughly the same time.

I wonder if there is any correlation with sick days taken by men in office

[denver2k]

Shall I do a survey of the lovely ladies on here?

Is there any?

[EternalOptimist]

Yep, even when you are on the pill you move closer to other women - most of us in the office are on at roughly the same time.

strangely enough, men tend to synchronise also. I found in the army that I awoke every morning with a boner, and so did the other guys.

[Rookie]

I found in the army that I awoke every morning with a boner, and so did the other guys.

Whatever floats your boat EO.

[Menelaus]

Yep, even when you are on the pill you move closer to other women - most of us in the office are on at roughly the same time.

This is an interesting evolutionary concept that multiple females in the same environment are menstruating at the same time. Hmm.

Other than "so we can get it out into the open and thus have the rest of the month without having to worry about each others feelings" , can anyone think of a reason for it?

[Mike Hunt]

strangely enough, men tend to synchronise also. I found in the army that I awoke every morning with a boner, and so did the other guys.

I thought those army boys were trying to save the country and all they are doing in the morning is rogering each other

[EternalOptimist]

This is an interesting evolutionary concept that multiple females in the same environment are menstruating at the same time. Hmm.

Other than "so we can get it out into the open and thus have the rest of the month without having to worry about each others feelings" , can anyone think of a reason for it?

You mean, why would it be selected for, in evolutionary terms ?

maybe a population that has its offspring at the same time has a better chance
maybe they can all bag the dominant male at the same time
It may be a chemical reaction based on a hormonal trigger

[Diver]

You mean, why would it be selected for, in evolutionary terms ?

maybe a population that has its offspring at the same time has a better chance
maybe they can all bag the dominant male at the same time
It may be a chemical reaction based on a hormonal trigger

What has Roy Rogers horse got to do with it?