What is the Puborectal Sling?
Puborectal Sling: The puborectal sling is a U shaped muscle loop deep in your pelvic floor that wraps around the rectum and helps control bowel movements, and it plays a big part in how relaxed or tense your body feels during anal sex.
Also known as: Puborectalis muscle, Puborectalis sling.
The puborectal sling is a band of muscle that loops around the back of your rectum like a sling, pulling it forward toward your pubic bone. It is part of a bigger group of muscles called the levator ani, which forms the floor of your pelvis. This particular muscle is the one most responsible for keeping the rectum bent at an angle, which helps you stay continent between bathroom trips.
In the context of anal sex, the puborectal sling matters a lot more than most people realize. When you hear that anal play feels tight or resistant a little further in than the anal opening itself, that resistance is often this muscle, not the sphincters everyone talks about. Learning what it is and how to relax it can make anal play far more comfortable.
What Is the Puborectal Sling and What Does It Do?
Picture a strip of muscle starting at your pubic bone, running back and looping around the rectum, then attaching again near where it started. That loop is the puborectal sling. Because it pulls the rectum forward, it creates a bend called the anorectal angle. This bend acts a bit like a kink in a garden hose, helping hold stool in place until you are ready to go.
When you relax this muscle, the angle straightens out and things can pass through more easily. When you tense it, the angle sharpens and the passage narrows. This is a normal, healthy reflex your body does without you thinking about it most of the time. During anal play, you can learn to influence it on purpose.
Where Is the Puborectal Sling and Can You Feel It?
You cannot touch the puborectal sling directly from outside your body, and gentle external pressure will not reach it. It sits deep enough that finding it precisely with a finger from inside the vagina is very difficult on your own, though a pelvic floor physical therapist can sometimes locate it during a clinical exam. What you can feel is its effect. During anal insertion, many people notice two areas of resistance rather than one. The first is right at the anal opening, where the internal and external anal sphincters sit. The second, a bit further in, is where the puborectal sling creates its bend.
That second band of resistance often feels like a gentle firmness or a sense of the toy or penis meeting an angle rather than a straight path. This is completely normal anatomy, not a sign that something is wrong. Slowing down, breathing, and letting that muscle soften usually lets things continue more comfortably from there.
How to Relax the Puborectal Sling for Comfortable Anal Play
The biggest trick is one most people never get told, bear down gently like you are trying to pass a small amount of gas or start a bowel movement. This motion is exactly what straightens the anorectal angle and lets the sling relax. It feels backward at first, since your instinct during anal play is often to clench, but clenching only tightens this muscle and makes things harder.
Go slowly and use plenty of water based lube, reapplying as needed since anal tissue does not produce its own lubrication the way other tissue does. Warm up with fingers or a small, body safe anal toy with a flared base before moving to anything larger. Take breaks whenever you feel resistance, breathe out slowly, and let your partner know if you need a pause. Rushing past resistance instead of waiting it out is one of the most common causes of discomfort.
Some people find it helps to practice noticing this muscle on their own first, during solo play or even just paying attention on the toilet. Getting familiar with the sensation of bearing down versus clenching, outside of a sexual context, makes it easier to apply during partnered play when nerves or excitement are also part of the picture.
Is Tension in the Puborectal Sling a Health Concern?
Occasional tightness during anal play is normal and usually just means your body needs a slower approach or more warm up. Chronic tension in this muscle, sometimes called a hypertonic pelvic floor, is a real condition that can cause ongoing pain during anal sex, difficulty with bowel movements, or general pelvic discomfort. This is something a pelvic floor physical therapist or a doctor can properly assess, since it is outside what any blog post can diagnose.
If anal play is consistently painful even with plenty of lube, patience, and gradual warm up, that is worth mentioning to a doctor rather than pushing through it. Pain is information, not something to override. There is no shame in needing professional support for pelvic floor tension, it is a common and treatable issue.
Talking to Your Partner About Relaxing Into Anal Play
Because the puborectal sling responds so strongly to stress and tension, feeling safe with a partner genuinely changes the physical experience. Talk beforehand about pace, what a pause signal looks like, and what to do if something feels off. Knowing you can stop at any point without an awkward conversation mid act takes a lot of pressure off your body to perform.
During play, simple check ins work well, a quiet how does that feel or a thumbs up system if talking feels like too much. If you are the receiving partner, telling your partner when you are bearing down and relaxing helps them match their pace to your body instead of guessing. This kind of open communication tends to matter more for anal comfort than any single technique.
Puborectal Sling vs Anal Sphincters: Quick Comparison
| Puborectal Sling | Anal Sphincters | |
|---|---|---|
| Location | Deep in the pelvic floor, looping around the rectum a bit further inside | Right at the anal opening, in two layers, internal and external |
| Type of control | Partly voluntary, can be trained to relax with practice | Internal sphincter is involuntary, external sphincter is voluntary |
| Role during anal sex | Creates a second area of resistance a little past the entrance | Creates the first area of resistance right at entry |
| How to ease it | Bear down gently as if passing gas, breathe slowly, go at your own pace | Relax with slow breathing, gentle warm up, and plenty of water based lube |
Key Things to Know
- The puborectal sling creates the anorectal angle, which is why anal play can feel like it has two points of resistance instead of one.
- Bearing down gently, rather than clenching, relaxes this muscle and can make insertion noticeably more comfortable.
- This muscle is very hard to touch directly on your own, so working with it is about breathing and body awareness rather than direct pressure.
- Chronic tightness here is a real, treatable condition, so ongoing pain during anal play is worth mentioning to a doctor or pelvic floor specialist.
- Understanding this anatomy helps you and a partner troubleshoot discomfort without assuming something is wrong with your body.
FAQ
What is the puborectal sling in simple terms?
It is a loop of muscle deep in your pelvic floor that wraps around the rectum and pulls it forward, creating a natural bend. This bend helps you control when you have a bowel movement. During anal play, this same muscle can create a feeling of resistance a little further in than the anal opening itself.
Why does anal sex feel tight even after the initial entry?
That extra tightness a bit further in is often the puborectal sling rather than the anal sphincters. It happens because this muscle keeps the rectum bent at an angle by default. Bearing down gently, similar to the motion used to pass gas, can help this muscle relax and ease that feeling.
Can you feel or touch the puborectal sling directly?
Not really on your own. It sits deep enough in the pelvic floor that a toy will not touch it directly, and finding it precisely with a finger is very difficult without training, though a pelvic floor physical therapist can sometimes locate it during a clinical exam. You can feel its effects, mainly as a band of resistance during anal insertion. Learning to notice and relax that sensation is more useful than trying to locate the muscle itself.
Is it normal to feel resistance during anal play from this muscle?
Yes, feeling a second point of resistance a little past the anal opening is common and normal. It usually eases with slow pacing, plenty of water based lube, and gentle bearing down. If it does not ease with patience and warm up, that is worth discussing with a doctor rather than pushing through discomfort.
How do you relax the puborectal sling for anal play?
Go slowly, use enough water based lube, and warm up with fingers or a small anal toy with a flared base before anything larger. Practice bearing down gently rather than clenching, since clenching tightens this muscle further. Breathing slowly and pausing when you feel resistance also helps it soften naturally.
Should I see a doctor about pelvic floor tension?
If anal play is consistently painful despite slowing down, using lube, and warming up, it is worth talking to a doctor or a pelvic floor physical therapist. Chronic tension in this area is a recognized condition and can often be helped with proper assessment. This kind of check up is routine and nothing to feel embarrassed about.
Related Terms
Sources
- PMC (National Library of Medicine) - Fecal Incontinence: The Importance of a Structured Pathophysiological Model: “the puborectalis muscle loops around the anorectal junction and, in rest, creates an anorectal angle of 80° to 90° due to partial contraction”
- US Patent documentation citing standard pelvic anatomy (System for treatment of anal incontinence): “the puborectalis muscle, which forms a sling around the rectum and is responsible for the so-called ano-rectal angle”
- Cleveland Clinic - Hypertonic Pelvic Floor: “Hypertonic pelvic floor occurs when your pelvic muscles don't relax.”
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