Using the backdoor?
- Julia Lee-Sylvester
- Apr 17
- 4 min read
A Pelvic Floor Therapists Guide to Safe, Pleasurable Anal Sex
As a pelvic floor physiotherapist, I hear it all in the clinic: curiosity, anxiety, excitement, and sometimes, pain. Anal sex is a widely practiced form of intimacy for both men and women, yet it is rarely discussed with the same medical openness as vaginal sex.
Many people assume anal sex is "supposed to hurt," but from a pelvic health perspective, pain is a signal, not a requirement. When done with preparation, patience, and proper techniques, anal penetration can be a safe, pleasurable, and consensual experience.
Here is your guide to navigating anal sex from a holistic, body-aware perspective.
1. The Anatomy & Physiology: It’s a "Tight" Area
The anus is surrounded by two sphincter muscles: the internal (involuntary) and external (voluntary) sphincters.
Lubrication: Unlike the vagina, which has glands to produce natural lubrication during arousal, the rectum does not self-lubricate. Without a high-quality lubricant, friction against this thin mucosa quickly leads to injuries.
Fragility: Because it is only one cell layer thick, the rectal lining is significantly more delicate and roughly 9 to 12 times thinner than vaginal tissue. This makes it far more prone to mechanical trauma and micro-tears during penetration.
Pelvic Floor Tip: If you have an overactive (tight) pelvic floor, you may experience higher levels of tension here. It is essential to "down-train"—or consciously relax—these muscles before and during play. See preparation below.
2. Preparation is Everything (Physical & Mental)
Say it louder for the people in the back. You cannot rush the anal canal!!
The Goal: To move from a "closed" state to a "relaxed" state. If you try to force penetration while the sphincters are spasming, it will cause discomfort or injury.
Relaxation begins in the brain—you must feel safe, comfortable, and aroused.
The "Knock on the Door" Rule: Never force entry. Place a lubricated finger or toy at the entrance and wait. Let the pressure of the object invite the internal sphincter to open on its own.
Breath is Your Best Tool: Your diaphragm and pelvic floor move together. Taking deep, diaphragmatic "belly breaths" naturally drops and relaxes the pelvic floor muscles, making penetration much easier.
Try "Reverse Kegels": Breathe deeply into your belly, allowing your pelvic floor to drop down towards your feet. Imagine the muscles between your sitting bones widening. Imagine a balloon blowing up in your pelvis and your butthole/anus blossoming like a flower. A great position to practice this in is a deep squat or simply lying down.
Foreplay is mandatory: The anal sphincter needs time to relax and loosen. Do not skip this step.
Use a graded approach- 1 finger first, using a toy- smaller size first. Then progress to larger toys or penile penetration.
3. Lubrication: More is More
Because the tissue is so thin and lacks its own moisture, lubrication is non-negotiable.
Choose the Right Glide: Silicone-based lubes are often preferred for anal play because they stay slippery longer and aren't absorbed as quickly as water-based options.
Safety Check: If you are using silicone toys, stick to a high-quality water-based lube to avoid damaging the toy.
Reapply Often: Reapply the moment you feel any "drag" or stickiness to prevent micro-tears.
4. Preparation and Hygiene
The "Cleanliness" Myth: You don't need a medical-grade internal flush. A normal bowel movement followed by a gentle external wash with warm water is sufficient.
Empty Your Bowels: Try to use the bathroom 30–60 minutes before play to help the muscles feel more "ready" and confident.
5. Safety Essentials
The Flared Base Rule: Only use toys specifically designed for anal play. These must have a flared base to prevent the toy from being pulled into the rectum by muscle contractions.
Avoid Numbing Creams: I strongly advise against numbing sprays. Pain is your body's safety signal; if you can't feel it, you risk causing serious tears or injury without knowing.
Condom Hygiene: If switching from anal to vaginal penetration, you must change the condom. Introducing anal bacteria into the vagina can lead to infections or UTIs. If you're not using a condom and your switching between anus and vagina, you'll need to have a soap and water wash of the penis/toy between swaps.
If using fingers, make sure nails are trimmed and clean.
6. Positions for Control
The person being penetrated should always be the one in control of the pace and depth.
Receiver on Top: This allows you to control the angle and speed completely.
Side-Lying (Spooning): This is often the most relaxing position for the pelvic floor, as it allows the belly to remain soft and makes deep breathing easier.
When to See a Professional
If you experience persistent pain (anodyspareunia), bleeding that doesn't stop quickly, feel you cannot relax despite your best efforts, or experience faecal incontinence after anal sex, a pelvic floor physiotherapist may be able to help. We use techniques like manual therapy and specialized breathing to help you regain comfort and confidence.
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