Why Would Men Turn Down Casual Sex?

Say you were to approach a strange man in public and ask him, “Will you have sex with me?” What do you think he’d say? A social-experiment group called Whatever did just that: They sent a hot woman up to random men to ask if they could spare a few minutes for romance-free, totally impersonal intercourse. And guess what? Half of the men said yes. 

Sex after a baby: When to bring romance back after giving birth

By Dr. Diana Sarmiento,
Nine months of carrying what seems like a watermelon in your tummy, pushing and straining to deliver your baby, getting stitches, having on-and-off bleeding, breastfeeding, sleepless nights...

The list goes on and on, making you wonder if you will ever get cozy with your husband again.

Well, the answer is YES. You will have to start having sex sometime. Even if you fear that your sutures might burst.

The Best Masturbation Tips Ever

BY DIANA SPECHLER

The maxim "He knows me better than I know myself"? Well, it probably doesn't hold true when it comes to pleasure centers. If you're like many women, you have had a long-term relationship with a vibrator and, with concentration, can get the deed done during a commercial break—without even muting the TV—if you so choose.

How Many Calories Do You Burn During Sex?

BY AMY RUSHLOW,

Ever wonder what kind of workout you get between the sheets? Thanks to new research from the University of Montreal, we have the precise answer: Men burn 100 calories in the average sex session, while women expend 69. (Yes, 69.)

The typical romp lasts 25 minutes from the start of foreplay to the end, but that’s just an average—the times varied widely in the study, and ranged between 10 and 57 minutes. The longer the session, the more calories burned.

Dwindling sex life? How to get more action

by AFP Relax

If stress is taking a toll on your sex life, here's your action plan to getting more action.

A large-scale study published this week in the journal The Lancet finds that Britons are having less sex these days, all due to the pileup of work and money stress and technology replacing fun romps in the bedroom, researchers said.

Prevention magazine also cites a recent study that found that the stress hormone cortisol, sparked by hectic schedules and tightening bank accounts, decreased physical arousal in women. 

Sex Studies: Blushworthy Headlines of 2013

By Stephanie Pappas, Senior Writer | LiveScience.com

The worst stereotypes of science suggest that it's boring, staid, or overly complex.

Not these studies. More often than people may think, science gets downright dirty, peering into bedrooms and asking nosy questions about secret fantasies. The science of sex is anything but dull.

With that in mind, here are 10 of the sex stories most likely to have caused blushing in 2013.

The Surprising Things Women Choose Over Sex

By Vanessa Golembewski, Refinery29

It's taken us a long time, but we think the population at large is finally convinced that women not only want, but enjoy sex. Wild, right? But, according to a new study by British beauty brand Sanctuary Spa, women do have a very interesting set of priorities. The data from the study reveals that 55 percent of women surveyed chose skin moisturizer over their sex life. Ninety-four percent also chose watching the newest episode of Downton Abbey over sex, too.

8 Things Men Wish Women Knew About Sex

By Diana Kelly
Chances are you would never tell your best friend’s boyfriend what she’s spilled to you about their sack sessions—and for good reason (um, awkward!). Sex therapists, however, are more loose-lipped, at least when it comes to sharing guys’ secrets that will strengthen your relationship and make for even hotter sex. Learn what he’s dishing out behind that closed door and how you can use that knowledge to make both of you happier, in and out of bed.

Sex and Sports: A Better Combo Than You Think

By Laura Schwecherl for Greatist.com

Muhammad Ali always abstained before hitting the ring. Even Plato said Olympic athletes should avoid sex before competition. But science suggests doing the deed won’t actually zap all that energy or be a distraction during the kick-off. In fact, an orgasm may help combat muscle pain for ladies, while a testosterone boost could even help build strength for men. (As if the act itself wasn’t reason to take part!)

10 Sex Facts You Need to Know

By Lucy Danziger and the staff at SELF

Because you’ve heard what they say: Knowledge is pleasure, er, power.

1. You might want to hit the gym before you hit the sheets. Getting just 20 minutes of cardio exercise can increase genital arousal in women, researchers at the University of Texas in Austin have found. But maybe shower between heart-pumping sessions?
2. Yep, size matters for women, too. A study in The Journal of Sexual Medicineshows that the clitoris becomes 15 to 20 percent larger on the 14th day of your cycle, thanks to the extra blood flow, making the spot even more sensitive.

Can We Blame Our Sexless Lives on Smart Phones?

By Farhana Nazir, Refinery29

The thought-provoking findings from the recent National Survey of Sexual Attitudes and Lifestyles (Natsal) provides us with some great insight into our sex lives. One worrisome revelation: We're getting busy far less than we used to - in fact, just three times a month on average. Shocking, right?

But, even more depressing is the revelation that our technological addictions could be to blame for our sex-starved lifestyles. Damn you, iPhone 5! Professor Kaye Wellings of the London School of Hygiene and Tropical Medicine tells The Daily Telegraph, "People [are] taking laptops to bed, iPads, the fact work comes into our home now - there's no strict divide." So, that bedroom office isn't such a good idea, after all.

Ancient Humans Had Sex with Mystery Relatives, Study Suggests

A new, improved sequencing of ancient human relative genomes reveals that Homo sapiens didn't only have sex with Neanderthals and a little-understood line of humans called Denisovans. A fourth, mystery lineage of humans was in the mix, too.

As reported by the news arm of the journal Nature, new genetic evidence suggests that several hominids — human relatives closer than humans' current living cousin, the chimpanzee — interbred more than 30,000 years ago. This group of kissing cousins included an unknown human ancestor not yet revealed by the ancient DNA record.

Mice research brings male contraceptive pill closer

A contraceptive pill for men has moved one step closer after Australian researchers successfully made male mice infertile, according to a study published Tuesday.

Monash University scientists genetically modified mice to block two proteins found on the smooth muscle cells which are essential for sperm to travel through the animal's reproductive organs.

The result was that even though the mice had sex normally and were otherwise healthy, they were infertile, researcher Sabatino Ventura from Melbourne's Monash University said.