# a man's wife and his mistress' menstrual cycles will sometimes sync **URL:** \ **Category:** Factual Questions\ **Created:** [July 15, 2010, 2:24am UTC](https://boards.straightdope.com/t/a-mans-wife-and-his-mistress-menstrual-cycles-will-sometimes-sync/546742 "2010-07-15T02:24:33Z")\ **Posts on this page:** 14\ **Page:** 1
**Author:** ![jstacy4444](https://avatars.discourse-cdn.com/v4/letter/j/4491bb/32.png) [@jstacy4444](https://boards.straightdope.com/u/jstacy4444)\ **Post date:** [July 15, 2010, 2:24am UTC](https://boards.straightdope.com/t/a-mans-wife-and-his-mistress-menstrual-cycles-will-sometimes-sync/546742/1 "2010-07-15T02:24:33Z")
Is this true? Bring your A game. I do not believe it but I have gotten some interesting comments from a friends facebook. We debated until the next day…🙂 ---
**Author:** ![Marley23](https://avatars.discourse-cdn.com/v4/letter/m/45deac/32.png) [@Marley23](https://boards.straightdope.com/u/Marley23)\ **Post date:** [July 15, 2010, 3:32am UTC](https://boards.straightdope.com/t/a-mans-wife-and-his-mistress-menstrual-cycles-will-sometimes-sync/546742/2 "2010-07-15T03:32:35Z")
Welcome to the board, **jstacy4444**. All I can say about this is it sounds like a variation on menstrual synchrony. Cecil’s written about that twice that I know of and it doesn’t sound like there is anything to it. If you’re interested, the columns are [Do the menstrual cycles of women living together tend to synchronize?](http://www.straightdope.com/columns/read/532/do-the-menstrual-cycles-of-women-living-together-tend-to-synchronize) and [Does menstrual synchrony really exist?](http://www.straightdope.com/columns/read/2429/does-menstrual-synchrony-really-exist) I’m moving your thread to General Questions from Great Debates. You may get a better answer there. ---
**Author:** ![BrainGlutton](https://avatars.discourse-cdn.com/v4/letter/b/82dd89/32.png) [@BrainGlutton](https://boards.straightdope.com/u/BrainGlutton)\ **Post date:** [July 15, 2010, 3:32am UTC](https://boards.straightdope.com/t/a-mans-wife-and-his-mistress-menstrual-cycles-will-sometimes-sync/546742/3 "2010-07-15T03:32:37Z")
Why would they match? If wife and mistress don’t even know each other? Even the theory that they’re somehow unconsciously adjusting their cycles for the same man would not make sense – men are **always** in season. ---
**Author:** ![foolsguinea](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/foolsguinea/32/14751_2.png) [@foolsguinea](https://boards.straightdope.com/u/foolsguinea)\ **Post date:** [July 15, 2010, 3:47am UTC](https://boards.straightdope.com/t/a-mans-wife-and-his-mistress-menstrual-cycles-will-sometimes-sync/546742/4 "2010-07-15T03:47:20Z")
> [@BrainGlutton](#): > > Why would they match? If wife and mistress don’t even know each other? Even the theory that they’re somehow unconsciously adjusting their cycles for the same man would not make sense – men are **always** in season. Pheromones carried on his body, I assume. The wife’s pheromones get to the mistress through him & vice versa. I think the relevant pheromones are carried in sweat. ---
**Author:** ![Scylla](https://avatars.discourse-cdn.com/v4/letter/s/a5b964/32.png) [@Scylla](https://boards.straightdope.com/u/Scylla)\ **Post date:** [July 15, 2010, 3:55am UTC](https://boards.straightdope.com/t/a-mans-wife-and-his-mistress-menstrual-cycles-will-sometimes-sync/546742/5 "2010-07-15T03:55:54Z")
in about once out of 28 cases. ---
**Author:** ![friedo](https://avatars.discourse-cdn.com/v4/letter/f/8edcca/32.png) [@friedo](https://boards.straightdope.com/u/friedo)\ **Post date:** [July 15, 2010, 4:14am UTC](https://boards.straightdope.com/t/a-mans-wife-and-his-mistress-menstrual-cycles-will-sometimes-sync/546742/6 "2010-07-15T04:14:32Z")
> [@Scylla](#): > > in about once out of 28 cases. More like one in four. Menstrual periods last a few days, and if any two women have theirs in the same week, they’re likely to overlap at least partially. As **Cecil** ’s articles point out, menstrual “synchrony” does not appear to have a statistically significant occurrence any greater than random chance. ---
**Author:** ![Nametag](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/nametag/32/406_2.png) [@Nametag](https://boards.straightdope.com/u/Nametag)\ **Post date:** [July 15, 2010, 4:16am UTC](https://boards.straightdope.com/t/a-mans-wife-and-his-mistress-menstrual-cycles-will-sometimes-sync/546742/7 "2010-07-15T04:16:04Z")
Will sometimes sync? Of course they will – all women’s cycles sometimes sync, just as all cycles do when they’re not EXACTLY the same length. Then they go out of sync again. Now, if your friend is denying that last part, he’s full of crap. ---
**Author:** ![thatnepaguy](https://avatars.discourse-cdn.com/v4/letter/t/a88e57/32.png) [@thatnepaguy](https://boards.straightdope.com/u/thatnepaguy)\ **Post date:** [November 21, 2016, 12:46am UTC](https://boards.straightdope.com/t/a-mans-wife-and-his-mistress-menstrual-cycles-will-sometimes-sync/546742/8 "2016-11-21T00:46:35Z")
My wife jumped 2 weeks to match my mistress. I was with my mistress mid wife cycle, then my wife got here period 2 weeks early, called the mistress…sure as shit she was on her period… nature is amazing. It makes it real difficult to always have a girl on the ready…going to see if more of them sync as i aquire them… i will keep you posted ---
**Author:** ![TreacherousCretin](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/treacherouscretin/32/476_2.png) [@TreacherousCretin](https://boards.straightdope.com/u/TreacherousCretin)\ **Post date:** [November 21, 2016, 12:59am UTC](https://boards.straightdope.com/t/a-mans-wife-and-his-mistress-menstrual-cycles-will-sometimes-sync/546742/9 "2016-11-21T00:59:32Z")
Somebody tell him. ---
**Author:** ![Princhester](https://avatars.discourse-cdn.com/v4/letter/p/3e96dc/32.png) [@Princhester](https://boards.straightdope.com/u/Princhester)\ **Post date:** [November 21, 2016, 1:34am UTC](https://boards.straightdope.com/t/a-mans-wife-and-his-mistress-menstrual-cycles-will-sometimes-sync/546742/10 "2016-11-21T01:34:27Z")
> [@thatnepaguy](#): > > going to see if more of them sync as i aquire them Where do you buy them? I looked in my local store and they were right out, said they weren’t expecting any in till… well, ever. ---
**Author:** ![snfaulkner](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/snfaulkner/32/433_2.png) [@snfaulkner](https://boards.straightdope.com/u/snfaulkner)\ **Post date:** [November 21, 2016, 1:42am UTC](https://boards.straightdope.com/t/a-mans-wife-and-his-mistress-menstrual-cycles-will-sometimes-sync/546742/11 "2016-11-21T01:42:45Z")
> [@TreacherousCretin](#): > > Somebody tell him. You mean about the zombie menstrual cycles? ---
**Author:** ![simster](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/simster/32/1047_2.png) [@simster](https://boards.straightdope.com/u/simster)\ **Post date:** [November 21, 2016, 2:33am UTC](https://boards.straightdope.com/t/a-mans-wife-and-his-mistress-menstrual-cycles-will-sometimes-sync/546742/12 "2016-11-21T02:33:35Z")
> [@thatnepaguy](#): > > My wife jumped 2 weeks to match my mistress. I was with my mistress mid wife cycle, then my wife got here period 2 weeks early, called the mistress…sure as shit she was on her period… nature is amazing. It makes it real difficult to always have a girl on the ready…going to see if more of them sync as i aquire them… i will keep you posted so, we should expect a visit from you monthly? I’ll write that on my pad. ---
**Author:** ![md2000](https://avatars.discourse-cdn.com/v4/letter/m/73ab20/32.png) [@md2000](https://boards.straightdope.com/u/md2000)\ **Post date:** [November 21, 2016, 4:40am UTC](https://boards.straightdope.com/t/a-mans-wife-and-his-mistress-menstrual-cycles-will-sometimes-sync/546742/13 "2016-11-21T04:40:11Z")
> [@simster](#): > > so, we should expect a visit from you monthly? I’ll write that on my pad. No, I think it means one week out of four he’ll be busy on other websites. ---
**Author:** ![Colibri](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/colibri/32/1841_2.png) [@Colibri](https://boards.straightdope.com/u/Colibri)\ **Post date:** [November 21, 2016, 5:06am UTC](https://boards.straightdope.com/t/a-mans-wife-and-his-mistress-menstrual-cycles-will-sometimes-sync/546742/14 "2016-11-21T05:06:18Z")
> [@thatnepaguy](#): > > My wife jumped 2 weeks to match my mistress. I was with my mistress mid wife cycle, then my wife got here period 2 weeks early, called the mistress…sure as shit she was on her period… nature is amazing. It makes it real difficult to always have a girl on the ready…going to see if more of them sync as i aquire them… i will keep you posted **Moderating** **thatnepaguy** , we ask that old threads only be bumped to add new factual information. Since this is an anecdote that doesn’t contribute very much, I’m closing this. Colibri General Questions Moderator