This advice still stands if your partner ejaculates inside you. Though some people worry this could cause runny poops that resemble diarrhea, Dr. Frankhouse says this actually isn’t the case. For one thing, since poop usually isn’t in your rectum until you’re close to expelling it, there’s no real opportunity for poop and semen to mix. Even if poop could go farther up into your colon, semen is usually runny. Since your anus will likely remain expanded for a few minutes after anal sex, that semen can just leak right on out, Dr. Frankhouse says.
3. You might think you're pooping, but you are not. The butt is full of nerves (hence, the point of anal play and foreplay), but that doesn't necessarily mean it can tell whether something is going in or out. You can put an end to things at any time, but just know that the feeling you have is probably just from the ~new stimulation~, not a sudden urge to go.
That information is very necessary, but I refuse to end this on a kind of scary note. The truth is that you can have an excellent time with anal play. Or it could be the exact opposite of your thing, which is OK, too. Either way, if you keep the above information in mind, you’re way more likely to come out of the experience having explored anal sex in a safe, healthy, potentially mind-blowing way.

The anus was designed to hold in feces. The anus is surrounded with a ring-like muscle, called the anal sphincter, which tightens after we defecate. When the muscle is tight, anal penetration can be painful and difficult. Repetitive anal sex may lead to weakening of the anal sphincter, making it difficult to hold in feces until you can get to the toilet. However, Kegel exercises to strengthen the sphincter may help prevent this problem or correct it.

While anal sex is commonly associated with male homosexuality, research shows that not all gay males engage in anal sex and that it is not uncommon in heterosexual relationships.[2][8][9] Types of anal sex can also be a part of lesbian sexual practices.[10] People may experience pleasure from anal sex by stimulation of the anal nerve endings, and orgasm may be achieved through anal penetration – by indirect stimulation of the prostate in men, indirect stimulation of the clitoris or an area of the vagina (sometimes called the G-spot) in women, and other sensory nerves (especially the pudendal nerve).[2][4][11] However, people may also find anal sex painful, sometimes extremely so,[12][13] which may be primarily due to psychological factors in some cases.[13]
Anal warts (also called condylomas) are growths that form just outside the anus and in the lower anal canal below the dentate line. Sometimes they can be found just above the dentate line. They're caused by infection with human papilloma virus (HPV). People who have or had anal warts are more likely to get anal cancer. (See “Potentially pre-cancerous anal conditions” below and Risk Factors for Anal cancer)
So, if you never want to try it or if you’ve tried it once and didn’t enjoy it, then the obvious but important anal sex tip I have for you is that you shouldn’t feel that you have to keep doing it with your man. If your sex life consists of you doing things that you don’t want to do, then it’s not going to be a particularly satisfying one. Like I mentioned previously, there are plenty more things you can do with your man.

^ Joseph A. Flaherty; John Marcell Davis; Philip G. Janicak (1993). Psychiatry: Diagnosis & therapy. A Lange clinical manual. Appleton & Lange (Original from Northwestern University). p. 217. ISBN 978-0-8385-1267-8. The amount of time of sexual arousal needed to reach orgasm is variable — and usually much longer — in women than in men; thus, only 20–30% of women attain a coital climax. b. Many women (70–80%) require manual clitoral stimulation...
The development of the anus was an important stage in the evolution of multicellular animals. It appears to have happened at least twice, following different paths in protostomes and deuterostomes. This accompanied or facilitated other important evolutionary developments: the bilaterian body plan, the coelom, and metamerism, in which the body was built of repeated "modules" which could later specialize, such as the heads of most arthropods, which are composed of fused, specialized segments.
Start With A Lubed Finger – If you read the Anal Sex Preparation Guide here, you’ll know that it’s best to try penetrating yourself ALONE first with a finger covered in lube so that you get to see how your sphincter reacts to it. If you’ve already done this a few times and have a good idea of how long it takes to relax around your finger, then you can get your man to do the honors this time. If you haven’t done it by yourself yet, then I recommend that you try it alone first while following these instructions.
5. You're gonna wanna be vocal during this process. Even if you're normally very quiet during sex, this is a time you'll wanna speak up—especially your first time trying it out with a new partner. Tell them if they're going too fast (or too slow—see point 10 below), if you feel like you're literally about to poop everywhere, or if you're experiencing pain/discomfort. Also, tell them if it feels good! If you're feeling nervous, chances are your partner is, too. Positive feedback—we love it!
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