This looks very interesting:

From Dr. Justin Lehmiller.

I haven’t heard of this being covered by Obamacare or other insurance so I’m self medicating:

Sleeping with more than 20 women protects men against prostate cancer, a study has suggested.

Men who had slept with more than 20 women lowered their risk of developing cancer by almost one third, and were 19 per cent less likely to develop the most aggressive form.

In contrast, men who slept with 20 men doubled their risk of developing prostate cancer compared with men who have never had sex with another man.

Researchers at the University of Montreal believe that intercourse protects men, and men who are more promiscuous have more sex than those in monogamous relationships.

The evidence just keeps increasing that there are significant health benefits to having a lot of sex.

There is no mention of study results for humans but this could have lots of implications for people in the lifestyle.

Can Previous Mating Partners Influence The Traits Of Future Offspring?:

Perhaps not surprisingly, DNA paternity analyses confirmed that the most recent male partner had indeed sired the offspring in the vast majority of cases. However, the scientists also found that the size of the offspring was strongly related to the size of the female’s first mating partner. At the same time, offspring size was unrelated to the size of the most recent partner, even in cases where there was definitive evidence that the most recent partner was the father. That’s right—the young flies tended to look more like mom’s first mate than they did their dads.

Via Glen Reynolds we have this report on various types of mattresses and their suitability for sex:

There is lots of additional information and detail in the complete article. What they didn’t report on is the suitability for group sex. While I like a waterbed with no baffles for one couple sex with two couples my experience is that everyone pretty much just gives up on the sex and starts laughing. The waves from the movement from one couple totally disrupts the motion of the other couple.

This is no surprise to me and probably not any of our lifestyle friends but it is supposedly news on the Huffington Post:

Apparently, unfaithful wives want to have their cake and eat it too. According to a new study, women who cheat on their husbands are looking for passion and sex, but they have no desire to end their marriages.

…

Anderson found that 67 percent of these married ladies were specifically looking for more “romantic passion,” aka sex. None wanted to actually leave their husbands and most even painted their clueless spouses in a positive light.

If these women were fulfilled emotionally, why the romantic ennui? “Our results reflect not marital disharmony, but the sexual monotony that is a social fact of the nature of long-term monogamous relationships,” Anderson said in a statement. “The most predictable thing about a relationship is that, the longer it progresses, the quality and the frequency of sex between the couple will fade. This is because we get used to and bored of the same body.”

And what does the author say about this study? She struggles to find exceptions and alternatives to having other sex partners.

The data is there. Why not just accept the facts, relax, stop being a prude, and have some fun in your life?

Interesting:

In environments where sperm from multiple males are competing intra-vaginally for fertilization, cooperation may actually increase the odds of reproductive success. Think of it this way: in species that are promiscuous by nature, sperm from the same male might have a tendency to cooperate instead of compete in order to reduce the odds that sperm from another male will reach the egg first.

Indeed, this is what the Harvard study found: the researchers studied two species of mice, one that is promiscuous by nature (Peromyscus maniculatus) and one that is monogamous (Peromyscus polionotus). In the promiscuous mice (where sperm from multiple males are often competing in the female reproductive tract), their sperm had a tendency to clump together in optimally sized packs that ended up reaching the egg faster. In contrast, in the monogamous mice (where sperm don’t have any external competition), their sperm were less likely to form these optimally sized packs.

If the authors of Sex at Dawn: How We Mate, Why We Stray, and What It Means for Modern Relationships are correct then humans should have sperm that tend to clump together. If the author of Sex at Dusk: Lifting the Shiny Wrapping from Sex at Dawn is correct then human sperm will tend not to clump together.

So why haven’t the Harvard researchers published the data?

There was a time when I would get suckered into reading a Cosmo article or two because of the enticing article title on the cover of the magazine. I stopped being suckered many years ago but that doesn’t mean other people don’t still get suckered. Apparently the enticement that suckered Jenny Block in was, “28 Mind-Blowing Lesbian Sex Positions”.

What is nice is that in the age of the Internet you can easily ridicule them:

It was as if a straight frat boy took out his doodle pad and drew every scene from every porn he had ever witnessed with Barbie or Disney princesses playing the leading roles, with their impossibly tiny bodies and silky, gravity-defying hair.

The positions were all hetero-normative fantasies of lesbian sex at their worst and silly at their best.

But I didn’t realize how truly insane and downright impossible they were until I called on my queer friends to act them out. I mean there was no way. Arms and legs were missing. It was impossible to hold up one’s own body weight, let alone the body weight of the other person in half of them. We had to balance on our tip toes and contort our bodies in the most insane ways. And, most importantly, there was nothing arousing about any of it.

Jenny and her friend posed and took pictures of each of the positions. Read the whole thing.

Via a tweet from NHASC we have this list of 100 Ways You Know You’re a Swinger. I could relate to all but one or two but the following really struck home:

3. You are running out of reasons to tell your coworkers why you can’t go out with them this weekend.

5. You know most of your friends’ by their first names (Rich & Jen, Frank & Beth) but you don’t know their last names.

20. You’ve hugged your friends goodnight while naked.

22. The word “slut” has become a term of endearment.

34. You’ve invited friends over and made porn.

42. You take photos of yourself with your head out of the frames, on purpose.

46. You frequently use the term “Friends of friends” when explaining how you know certain people.

60. On Christmas, there are certain presents that can’t be opened in front of your family.

81. Your sexual fantasies never last very long… Because they keep coming true!

89. After 25 years, people still ask if you’re newlyweds.

I found a blog post with someone asking for MFM threesome advice. I left the following comment and thought it might be useful for my readers here:

I couldn’t tell you how many times I’ve had MFM threesomes with various women. Probably a third of them were with my (now ex-) wife and the rest were at sex parties with other women. They were all great fun.

My advice to anyone trying a threesome for the first time is for the minority gender, the woman in this case, to not worry about satisfying both of their other playmates. This is a time for them to lay back and enjoy the attention. If you worry about making two people happy you are taking on double the “work” load and you will stress about that too much.

If they are like me they will have a great time without getting quite as much attention from you as they usually would.

From Carlin Ross:

These are brothel coins depicting various sex acts one could purchase legally throughout Rome.