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Published on: 2/1/2026
Comfortable anal intimacy depends on relaxation: when the body feels safe, the external sphincter you control and the autonomic internal sphincter can soften, so slow pacing, generous lubricant, consent, and staying in control make penetration comfortable while pain is a warning to stop. There are several factors to consider. See below for practical step by step guidance, hygiene and protection tips, who should be cautious, and when to see a clinician, as these details can meaningfully shape your next healthcare steps.
What is anal sex, and why relaxation matters more than anything else
What is anal sex? In simple terms, anal sex refers to sexual activity involving the anus, most commonly penile–anal penetration, but it can also include fingers or sex toys. People choose anal intimacy for many reasons—curiosity, pleasure, emotional closeness, or variety in their sex life. Like any sexual activity, comfort and safety depend on understanding the body and respecting physical and emotional limits.
One of the biggest misunderstandings about anal sex is that discomfort is "normal" or unavoidable. Credible medical and anatomical sources agree on a key point: anal sex should not be painful when done correctly. The main difference between a comfortable experience and an unpleasant one often comes down to a single factor—relaxation.
To understand why relaxation is so important, it helps to know how the anus is built.
The anal canal is controlled by two circular muscles called sphincters:
Unlike the vagina, the anus does not self-lubricate and is designed primarily for containment, not penetration. This does not mean anal sex is unsafe or "wrong," but it does mean the body needs time, trust, and relaxation to allow penetration comfortably.
The internal sphincter is the real "gatekeeper." If the body senses tension, it tightens—no matter how much you consciously want to relax. This is why forcing penetration can cause pain or injury.
The relaxation secret is not about willpower or "pushing through." It's about creating the conditions where the nervous system feels safe.
Medical and sexual health experts consistently point to these elements:
When the nervous system feels safe, the internal sphincter begins to relax naturally. This is not instant—it can take minutes or longer. Rushing is the most common reason people experience pain.
Pain during anal sex is not something to ignore. From a medical standpoint, pain is the body's way of saying something is wrong.
Possible causes of pain include:
Ignoring pain can increase the risk of:
Discomfort that does not improve with slowing down and adding lubrication is a reason to stop and reassess.
The anus is highly sensitive to stress. Even subtle anxiety—worrying about pain, embarrassment, or past experiences—can trigger muscle tightening.
For some people, this anxiety is linked to previous unwanted experiences, even if they occurred long ago or are not consciously remembered. This does not mean anal sex is "off-limits," but it does mean emotional readiness matters as much as physical preparation.
If you've experienced past trauma and suspect it may be affecting your intimate life today, Ubie's free AI-powered Sexual Trauma symptom checker can help you privately explore whether your body's stress response is connected to unresolved experiences—and guide you toward the right support.
Using common medical guidance, here are evidence-informed ways to support comfort:
The anal sphincter relaxes gradually. Rushing increases tension. Slow entry, pauses, and checking in with your body are essential.
Because the anus does not self-lubricate:
Especially for beginners, being able to control depth and speed helps the nervous system feel safe. Feeling "trapped" or rushed increases muscle tightening.
Slow, deep breathing signals the nervous system to relax. Exhaling during entry can help reduce involuntary tightening.
A stretching sensation can be normal at first. Sharp, burning, or increasing pain is not. Stopping does not mean failure—it means listening to your body.
Good hygiene supports both physical comfort and peace of mind:
From a medical perspective, anal tissue is more delicate than vaginal tissue, which is why gentleness and protection matter.
Certain conditions make extra care important:
If any of these apply, anal sex may still be possible, but only with medical guidance.
You should speak to a doctor if you experience:
Anything that could be life-threatening or serious should always be evaluated by a qualified medical professional. Sexual health is part of overall health, and doctors are trained to discuss it confidentially and professionally.
So, what is anal sex really about? Anatomically, it is an activity that requires cooperation from muscles designed to protect the body. Comfort does not come from toughness or endurance—it comes from patience, communication, and respect for how the nervous system works.
The true relaxation secret is understanding that:
With accurate information, self-awareness, and medical guidance when needed, people can make informed decisions about anal intimacy that prioritize health, dignity, and comfort.
(References)
* Stier, E. D., & Siegel, J. A. (2022). Pelvic Floor Muscle Training for Anal Intercourse: A Scoping Review. *Sexual Medicine Reviews*, *10*(4), 589–595.
* Rao, S. S., & O'Brien, R. L. (2001). Voluntary relaxation of the external anal sphincter: role in continence and defecation. *Diseases of the Colon and Rectum*, *44*(1), 115–120.
* FitzGerald, M. P., & Kotarinos, R. (2014). Pelvic Floor Muscle Pain and Dysfunction as a Cause of Dyspareunia and Anorectal Pain. *Clinical Obstetrics and Gynecology*, *57*(4), 738–745.
* Chiarioni, G., & Whitehead, W. E. (2018). Biofeedback therapy for dyssynergic defecation and pelvic floor pain conditions: A comprehensive review. *Journal of Neurogastroenterology and Motility*, *24*(2), 200–211.
* Bharucha, A. E., & Rao, S. S. (2017). Anorectal Anatomy and Physiology. *Clinics in Colon and Rectal Surgery*, *30*(3), 177–187.
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