Unprotected receptive anal sex (with an HIV positive partner) is the sex act most likely to result in HIV transmission.[14][15][16] Other infections that can be transmitted by unprotected anal sex are human papillomavirus (HPV) (which can increase risk of anal cancer[75]); typhoid fever;[76] amoebiasis; chlamydia;[15] cryptosporidiosis; E. coli infections; giardiasis; gonorrhea;[15] hepatitis A; hepatitis B; hepatitis C; herpes simplex;[15] Kaposi's sarcoma-associated herpesvirus (HHV-8);[77] lymphogranuloma venereum; Mycoplasma hominis; Mycoplasma genitalium; pubic lice;[15] salmonellosis; shigella; syphilis;[15] tuberculosis; and Ureaplasma urealyticum.[78]
The abundance of nerve endings in the anal region and rectum can make anal sex pleasurable for men or women.[4][2][5] The internal and external sphincter muscles control the opening and closing of the anus; these muscles, which are sensitive membranes made up of many nerve endings, facilitate pleasure or pain during anal sex.[2][5] The Human Sexuality: An Encyclopedia states that "the inner third of the anal canal is less sensitive to touch than the outer two-thirds, but is more sensitive to pressure" and that "the rectum is a curved tube about eight or nine inches long and has the capacity, like the anus, to expand".[5]
In Japan, records (including detailed shunga) show that some males engaged in penetrative anal intercourse with males,[117] and evidence suggestive of widespread male-female anal intercourse in a pre-modern culture can be found in the erotic vases, or stirrup-spout pots, made by the Moche people of Peru; in a survey, of a collection of these pots, it was found that 31 percent of them depicted male-female anal intercourse significantly more than any other sex act.[118] Moche pottery of this type belonged to the world of the dead, which was believed to be a reversal of life. Therefore, the reverse of common practices was often portrayed. The Larco Museum houses an erotic gallery in which this pottery is showcased.[119]
Intra-rectal pressure builds as the rectum fills with feces, pushing the feces against the walls of the anal canal. Contractions of abdominal and pelvic floor muscles can create intra-abdominal pressure which further increases intra-rectal pressure. The internal anal sphincter (an involuntary muscle) responds to the pressure by relaxing, thus allowing the feces to enter the canal. The rectum shortens as feces are pushed into the anal canal and peristaltic waves push the feces out of the rectum. Relaxation of the internal and external anal sphincters allows the feces to exit from the anus, finally, as the levator ani muscles pull the anus up over the exiting feces.

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)
In a male receptive partner, being anally penetrated can produce a pleasurable sensation due to the inserted penis rubbing or brushing against the prostate through the anal wall.[4][11] This can result in pleasurable sensations and can lead to an orgasm in some cases.[4][11] Prostate stimulation can produce a deeper orgasm, sometimes described by men as more widespread and intense, longer-lasting, and allowing for greater feelings of ecstasy than orgasm elicited by penile stimulation only.[4][11] The prostate is located next to the rectum and is the larger, more developed male homologue (variation) to the female Skene's glands.[22] It is also typical for a man to not reach orgasm as a receptive partner solely from anal sex.[23][24]
I’ve always enjoyed anal sex, it usually came doggy style. I haven’t dated in many years, but a male friend recently sent me a dildo, well, superb. He wanted to watch me, so I videoed everything for him. This was the first time I ever got into different positions for anal. Including laying on my side as mentioned previously. I just love anal, and when you’re doing for yourself, positions are key, I can get doggy style in but it strains my arms, the easiest, most comfortable, with less arm straining I’ve found for myself is to lie on back, knees to chest, spread or not. I love anal either way, and men who actually know what they are doing in bed are superb. I’ve recently got completely involved with a bodacious beautiful man I grew up with. WE haven’t had sex yet, I’ve been saving myself for my perfect man, the last man I’ll ever be with. He will enjoy me completely, my sexual appetite and desires have only increased over the years. Wow, it’ll be intensely awesome. I’ve noticed though, reading your bad girl bible, I was doing everything right from the beginning and I’ve learned so much as well. (Its been about 7 yrs now since I let a man touch me) And I’m ecstatic that I’m giving myself to my “Perfect Man”., and what I have in-store for him. WOW!!!

I’ve had a lot of anal sex before with women who were already experienced and I tried it with my current girlfriend for the first time. She was a bit drunk and on her period and was having a hard time giving me a blow job so she told me to do her wherever I wanted. I asked where she wanted and suggested tits or ass, she said she was down for ass if I wanted it. I told her what I wanted (ass) because it feels so good so she asked where the lube was and I got it.
In a 2010 clinical review article of heterosexual anal sex, anal intercourse is used to specifically denote penile-anal penetration, and anal sex is used to denote any form of anal sexual activity. The review suggests that anal sex is exotic among the sexual practices of some heterosexuals and that "for a certain number of heterosexuals, anal intercourse is pleasurable, exciting, and perhaps considered more intimate than vaginal sex".[6]

Then, when you feel cool, calm, and ready to start exploring anal play, you or your partner can use a finger or sex toy to massage the outside of your anus. This can help you get familiar with the sensation before any kind of penetration happens. Once you’re beginning to enjoy yourself, Dr. Chinn says you can experiment with sticking a finger or sex toy in your anus bit by bit based on what feels good, using plenty of lube, of course.


Partaking in any form of sex – be it oral, anal, or vaginal, can put one at risk of contracting a sexually transmitted infection (STI). Anal sex, however, carries the highest risk of transmission. This is because the tissue in the anus is quite fragile and thus incurs small, microscopic tears during the act of anal sex. These tears expose trace amounts of blood, making it much more likely for HIV and/or Hepatitis B or C to be transmitted. The risk of contracting these STIs is greater for the recipient (aka the “bottom”), but the “top” is also at risk. This is still true when lots of lubrication is used.

A different kind of sex toy is a vibrator. Vibrators run on electricity or batteries, and they vibrate (buzz) when you turn them on. Many people like the feeling of vibrations on their genitals, especially the clitoris, penis, and anus. Vibrators also come in different shapes, materials, and sizes. Some are shaped so they can be inserted into a vagina or anus. Others are designed to be used on the outside of your body, like on the clitoris or penis. People can get vibrators and other sex toys online, in some drugstores, and at “adult shops” (you may have to be at least 18 years old to go into some stores that sell sex toys).
2. Create a chill anal play area. Listen... All sex can sometimes be messy, and anal sex and foreplay is no exception. If this is gonna stress you out to the point that you're unable to relax and enjoy yourself, try prepping your space ahead of time. Like, maybe strip the fancy sheets off your bed or cover your comforter with a soft, washable blanket.
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I’m a lucky man to have such a woman as my lover. But the story is really to say that anal sex is horses for courses. She at NO time ever complained of pain or discomfort on her first trip down Sphincter Alley. I know I would have!! We went the full Monty next time and I got my cock really deep into her and man, she was just going wild! It was just slowness and patience and above all utter relaxation that gave her such an easy and joyous initiation. Take note.
For your first time, Hutcherson says spooning is better than doggy-style. “For those just starting out, I think getting on all fours might be a little too intense. Lying on your side in the spooning position won’t allow penetration that’s as deep. It’s also a more relaxing position. When you become more comfortable, the doggie is the easiest way for a woman to orgasm.” And don’t forget to breathe. Says O’Reilly, “As you breathe deeply, your inner sphincter muscle will relax to facilitate penetration.”
Fortunately, sex educators have met this rising demand with a wealth of how-to guides and things to keep in mind for those exploring anal. Unfortunately, many people dive right in without doing much research. That means, what little anal education many first timers have often comes from porn, where anal is often portrayed as easy: just shove an unlubricated toy or peen up an asshole, with no preparation, and pump hard for, like, an hour.

"My guy absolutely loves anal sex from time to time, so any time he does something particularly sweet, brave or helpful for me, I very often reward him with my waiting derriere. Not only does he totally appreciate me offering, but in the B.F. Skinner "operant conditioning" model of psychology, it reinforces him doing sweet, brave and helpful things in the future!" says Singer.
Another really common cause is a hemorrhoid (yup, we're talkin' hemorrhoids, folks) you didn't know about. This is a bit more alarming, because a hemorrhoid holds a bunch of blood inside. You'll probably feel some level of discomfort or pain if you have a hemorrhoid, and if it bursts, you'll definitely see some bleeding that should totally subside within a few days.
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