What Does Penetration Actually 'Feel' Like?

What does a vagina or penis actually ‘feel’ (during penetration)? It's a surprisingly difficult question to answer. We know quite a lot about genital anatomy, but we know much less about how people actually experience the physical sensations of intercourse. We talk about orgasm, sexual desire, and satisfaction. Much less often do we ask about the sensation itself.

I didn't expect that to become such an important question in my career. And I certainly didn't expect one colleague to tell me that answering it changed his sex life.

The Conversation That Stayed With Me

A few years ago, I shared the results of one of my studies with a colleague. We talked about it for a few minutes and then moved on. Then, a few weeks ago, he stopped me for a hallway conversation. "You probably don't remember telling me about that study," he said, "but it completely challenged how I thought about sex."

That surprised me. He wasn't someone who lacked knowledge about sexuality. Although he is not a sex therapist, he's spent his career as a counsellor, deeply committed to helping people build healthy relationships. He understood the importance of the clitoris and had always cared about his partners' pleasure. By most people's standards, he was already a thoughtful lover.

Yet he admitted that he had been unknowingly carrying a problematic assumption for his entire adult life. He assumed his partner experienced intercourse in her vagina much the same way he experienced it in his penis. It was a belief he had never questioned. Why would he? None of us know what someone else is experiencing. Our partner's experience can only ever be imagined—unless we ask.

As a sex therapist myself, I began to suspect that this assumption was not all that rare. Clients in my practice often described intercourse (penis-vagina) as though it should naturally feel intensely stimulating for everyone involved. That made me wonder how widespread this assumption really was.

The Question

Ironically, this question became clearer while I was working on a completely different research project. I was analyzing pornography. Like most people, I already knew pornography exaggerates reality. What caught my attention was something more subtle. The women in many scenes appeared to experience extraordinarily intense sensations from intercourse alone—as though vaginal stimulation produced sensations every bit as intense as the man experienced from the penis.

While popular culture often implies heterosexual intercourse should feel the same for both lovers, anatomy suggests a more complicated story. The vagina and the penis are remarkable organs, but they are not built the same way. Their sensory anatomy differs, which raises an obvious question: Does sexual intercourse actually produce the same intensity of pleasurable sensation for both partners?

Surprisingly, I couldn't find a study that answered that question directly. So we decided to ask it ourselves. In a larger study I was conducting on orgasm (presented at SSTAR, 2026), we included a question that asked participants to rate the intensity of the pleasurable sensations they experienced in their penis or vagina during their most recent experience of penile-vaginal intercourse. Study details here. We asked specifically about vaginal sensation on its own, apart from the clitoris, since the clitoris may or may not be stimulated during intercourse. We weren't asking who enjoyed intercourse more, who orgasmed, or who had better sex. We were asking about the intensity of the sensation itself.

Sexual intercourse can involve intense pleasurable sensations without leading to orgasm. It can also involve relatively subtle sensations while still feeling deeply intimate, emotionally meaningful, or sexually satisfying. In other words, pleasurable intensity is one piece of the larger puzzle of sexual intercourse—not the whole picture.

What We Discovered

The results were striking. Women were more likely than men to describe the intensity of pleasurable sensations in their vagina as low or moderate in intensity. Men, on the other hand, were more likely to report highly intense pleasurable sensations in their penis during intercourse.

This finding doesn't tell us who enjoys sex more. Nor does it tell us who has better sex. It tells us something much more specific: the level of intensity of (pleasurable) sensations reported during intercourse is not the same for everyone.

That finding is consistent with what we know about anatomy. The penis and vagina are different organs with different sensory structures, so it shouldn't surprise us that they can produce different sensory experiences. The vagina, clitoris, and penis are anatomically wired to detect different sensations, more here.

This lines up with other research where women have reported the vagina to be less sexually sensitive than the external genitalia, allowing the strongest, easiest orgasms to come from the area on and above the clitoris (Schober et al., 2004). And most women require (or are helped) by clitoral stimulation to orgasm during intercourse (Herbenick et al., 2018).

What People Thought Their Partners Felt

The next question interested me even more. After asking people about their own experiences, participants were asked what they believed was true for the other person. Which organ do you think experiences stronger pleasurable sensations during intercourse—the penis or the vagina?

The difference was striking. Two-thirds of women believed the penis feels more during intercourse. Men were far less sure. Among nearly 6,000 men and women surveyed, 59.2% of men thought the vagina feels at least as strong as the penis, if not stronger.

What struck me wasn't whether either group was "right." It was that many of us appear to begin our sexual relationships with very different assumptions about what intercourse feels like for the other person.

Why I Think This Matters

Our assumptions aren't necessarily the problem. We all make them. The problem is that assumptions replace curiosity. When we believe we already know what our partner experiences, we stop asking. And when we stop asking, we give up one of the best chances we have to actually know each other.

One of the most meaningful questions you can ask your partner is not, "Did you orgasm?" It is, "What did that actually feel like for you?" There is no ‘right’ answer. There's only their answer. Some people experience intercourse as intensely stimulating. Others experience it as emotionally powerful but physically more subtle. Many find that the most pleasurable parts of sex involve much more than intercourse alone. None of those experiences is wrong. They are simply different. And if we never talk about them, our partners are left to fill in the blanks with their own assumptions.

Perhaps that's what my colleague discovered. He realized that his partner might not experience intercourse in anything like the way he did. It changed how he listened. He assumed less. Became more curious. And, in the end, more connected.

Maybe that's the real lesson from this research. The best sex doesn't come from believing we already understand each other's bodies. It begins the moment we realize we don't.

I think that's a pretty good place to start.

One way to start the conversation about what sex feels like is by taking the questionnaire yourself, then send your partner the link to take their own version. You'll each get a private report—and a way to compare notes, together, when you're ready. Take the penetration questionnaire here.

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