1. Your Breasts Get Bigger

Although you probably don’t usually give it much thought, the next time you’re getting in or out of the shower, look at your breasts. Do you notice that they contain a significant amount of veins? Well, when you become sexually aroused, those veins fill up with blood, and that can cause your breasts to increase in size by as much as 25 percent. Not only that, but some medical professionals say that your areolas (the darker-colored skin that surrounds your nipples) also produce pheromones; these substances can help to improve one’s mood and heighten one’s attraction to their partner.

2. Your Vagina Gets Larger and Darker

Although the exact length can vary a bit when it comes to the size of your vagina, it tends to be somewhere around 3” when you’re not aroused and between 4”-5” when you are. This makes a lot of sense considering the fact that the average size of a penis when it’s erect is 5.5”. However, it should go on record that no amount of sex or no size of a penis can permanently “stretch you out.” So, if there’s some man in your world who believes that, send him this article ASAP.

Another thing that happens to your vagina (the inner tube that goes from your outer opening to your cervix) is it gets darker due to all of the vessels in it that also fill up with blood. As far as your vulva (the outer part of your vagina) goes, while it might look a little flushed after climaxing, for the most part, it remains the same in appearance.

3. Your Clitoris “Leaves” You

You know the saying, if you don’t use it, you’ll lose it? Believe it or not, this actually can apply when it comes to your clitoris (check out “10 Things I Bet You Didn't Know About Your Clitoris”). That’s because if you go long periods without sexual activity, that can cause your clitoral skin to become thin and dry and even shrink (crazy, right?). This can also happen during menopause as your hormone levels go through a significant shift.

And while it does usually get larger during foreplay, another time when your clitoris will probably get smaller is when you’re on the brink of climaxing. For whatever the reason, when you’re about to orgasm, it prefers to disappear inside of your clitoral hood (check out “7 Reasons You Should TOTALLY Be In Love With Your Clitoral Hood”) and snuggle up next to your pubic bone. This actually may be why your partner becomes a bit more aggressive (in a good way) during cunnilingus. He might not say it, but he very well could be looking for your clit — which would make total sense.

4. Your Cervix Tilts

One kind of orgasm that some women are able to have during penetrative sex is a cervical orgasm. Although your cervix (the tube/canal that connects your uterus to your vagina) can’t exactly be penetrated, it can be stimulated. It should go on record that while one woman may find cervical stimulation pleasurable, others actually find it to be close to painful. So, if you happen to fall into category B, aim for another kind of climax; there are plenty of others to choose from (check out “U-Spot Orgasm, Fantasy Orgasm & 6 Other Orgasms You Should Try Tonight”).

That said, when you’re aroused, it’s pretty common for your cervix to pull back closer to your uterus in order to accommodate a penis (or sex toy). It’s also normal for it to tilt — in other words, to rock back and forth. If you’re wondering if you’ll notice…eh, probably not.

5. Your Body Temperature Increases

This one is probably the least surprising of all when you stop to think about the fact that sex is a form of exercise and cardio tends to cause your temperature to go up. In fact, this is probably why so many say that wearing socks during sex can improve your chances of experiencing the Big O.

Some studies claim having socks on can increase your chances of climaxing by as much as 30 percent. Why? Well, one reason is due to the fact that wearing socks increases one’s blood flow and body temperature. Not only that, but it can help you to feel cozier when it comes to being intimate with your partner.

Personally, I hate wearing socks to bed (for any reason), and I hate feeling hot even more. But if you’re just the opposite, here’s a hack that could make sex even better for you. Report back if it does.

6. Your Brain “Lights Up”

When it comes to this one, I am absolutely not exaggerating. When you’re having sex (and especially when you’re on the brink of having an orgasm), there are different parts of your brain that light up, just like a Christmas tree — the genital sensory cortex, hypothalamus, thalamus, motor areas, and the substantia nigra. All of these parts work together to send information to different body parts, trigger the production of various hormones (that work to make sex more pleasurable) and help you to focus on what’s happening in the moment.

7. Your Brain Also “Turns Off”

LAWD. If you don’t get anything else from this lil’ read, please take this point in. While on the one hand, there are parts of your brain that become more active, there is another part that actually decreases during sex. It’s called your lateral orbitofrontal cortex, and it’s responsible for things like your reasoning capabilities, your judgment calls, and your decision-making process(es).

This is DEFINITELY reason one billion why you shouldn’t rely on sex to help you decide if someone is a good fit for you or not. Hmph, let your lateral orbitofrontal cortex tell it, it doesn’t have a clue (check out “What If The Sex Is Great? But The Relationship Sucks.”).

8. Your Pain Threshold Increases

If you really stop and think about how it can sometimes take a bit of maneuvering and finessing to get a tampon or a menstrual cup into your body, doesn’t it make sense that your threshold for pain would increase during sex? I mean, a penis is a lot larger than either of those, and between the penetration and all of the thrusting — yeah, like I said, it makes all of the sense in the world.

So, exactly how much does your threshold tolerance go up? I once read a science-based study that said the threshold skyrockets to almost 40 percent more while pain detection is somewhere around 53 percent. (This might explain why BDSM engagers experience pleasure when you really stop to think about it, huh?)

9. Your Immunity Strengthens

Well, here's a solid reason to ramp up your sexual activity. Did you know that people who have sex more than three times a month have a significantly stronger immunity than those who engage less than that? That's because something else that sex does is increase your body's ability to fight off pathogens. In case you're wondering, pathogens are organisms that literally cause disease.

Speaking of immunity, something else that can help you out is giving fellatio. Hey, roll your eyes if you want to, but there's plenty of data out there on that, too (check out "Do You Swallow? The Unexpected Health Benefits Of Sperm").

10. Your Skin Looks Younger

To be honest with you, during copulation, there really isn’t one part of your body where blood flow doesn't increase. When it comes to your skin, specifically, the more blood it gets means the more oxygen that it receives. This is a real win because oxygen helps to increase the production of collagen in the body — and collagen is something that we all need to keep our skin clear, supple, and younger-looking. That’s why it’s actually not just a saying that sex can get rid of blemishes and give you great-looking skin. There is science to totally back those claims up — as you just read.

As a bonus, because sex can also increase your production of estrogen, word on the street is it has the capability to help your hair to stay long and healthy too. Another win, indeed.

11. Your Desire to Bond with Your Partner Significantly Grows

Until the cows come home, I’m gonna stay on-repeat about the fact that oxytocin is one hell of a drug (well, hormone) when it comes to sex. And since the late philosopher Thomas Hobbes once described hell as truth being seen too late, this is something else to keep in mind when it comes to using solid discernment as it relates to sex.

I say that because a huge part of the reason why oxytocin has earned the nickname “the love hormone” is it has the amazing ability to make people feel very close to their partner during things like kissing and cuddling — and especially during sex.

This can be a good thing when a secure relationship is already established. It can also put you on quite the emotional roller coaster ride if you’re not sure where things stand, yet oxytocin is somewhere in your body yelling, “Don’t worry about it! If it feels right, it must be right.”

Yeah, don’t fall for that. It’s another article for another time, yet there is something to be said for things like logic, common sense, emotional intelligence, and paying attention to patterns — no matter how good a man can make you feel in the bedroom. In other words, please make sure that once oxytocin boosts have calmed down that you notice what’s happening outside of the bedroom too. And then act accordingly.

12. Your Vagina “Bounces Back”

Even if your vagina appears a bit larger right after sex, that’s nothing to be concerned about. After all of that back-blowing (wink), the friction can lead to a bit of swelling initially. However, what you can be absolutely sure of is things will return to their normal/regular size after a few moments. Listen, we’re capable of pushing out baby heads. Ain’t no penis in the world gonna cause you to lose your elasticity. Always remember that.

Let Your Partner Know: Your Vagina Contracts

Whenever women brag to me about how good they are at faking orgasms (check out “Why You Should Stop Faking Orgasms ASAP” and “So, 10 Women Sat Down And Told Me Why They Fake Orgasms...More Times Than Not”), I’ll usually say something along the lines of, “Then your partner isn’t paying close attention to what’s going on” because, unless you’re pulling off hella kegels as you’re acting like you’re seeing the mountaintop, he should notice that your vaginal walls aren’t contracting.

Yep — it doesn’t matter how much screaming and hollering you might be doing, something that transpires for a woman during an orgasm is the muscles in her pelvic region start to involuntarily contract (this happens to your anal muscles during anal sex as well).

So when it comes to concluding this article and debunking the myth that faking it is hard to detect — unless some wall-shaking is going on, the jig is up.

The good news on that is now you both need to figure out how to make your body do all of this stuff — without you having to try and act like it’s happening. Feel me?

Something tells me that you absolutely do.

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