The 10 Most-Read Q&As on Sex and Psychology

Here's an updated list of the ten most read Q&As of all time on the blog. These questions (all submitted by readers of Sex and Psychology) span quite the range of topics. Some of them are united by this theme: “What’s normal when it comes to sex?” Others, however, focus more on curiosity about different sexual practices, as well as what's safe when it comes to sex. 

10. Is deeper penetration better? (For most women, this is not necessarily true—but for some it is. In fact, research has found that some women can reach orgasm from stimulation of the cervix.) 

9. Does penis size actually affect female pleasure? (The answer to the deeper penetration question above addresses the issue of penile length. So what about girth or circumference? Research finds that women tend to rate girth as the most important penis dimension. For a look at some of research on this subject, see here.)

8. How often do married couples have sex? (It turns out that there's a lot of variability, and sexual frequency depends a lot on people's age.  It's also important to note that more isn't always better when it comes to sex and that, as we get older, quality of sex becomes much more important than quantity.)

7.  Do women enjoy anal sex? (Many women do, and studies find that this is an increasingly common sexual activity practiced by women today. Although it didn't make the top 10 list this time around, many readers have also been curious about how to make anal sex more pleasurable.) 

6. Is it possible for a woman to become a virgin again? (Most people who have asked me this question were really asking whether it's possible for the hymen to grow back. The short answer is that this is almost unheard of. In fact, I've only ever read about one case in which this happened and it was a medical anomaly. That said, there are some women who are having their hymens surgically restored for a range of reasons. This is also uncommon, but you can learn more about it here.)

5. Why are so many straight men into transsexual porn? (This is a very common sexual interest among men and, contrary to popular belief, most men who are attracted to transwomen are not gay.) 

4. How deep is the average vagina? (What the available research shows is that the average vaginal depth is a little shorter than the average penis length, which may explain why penis girth is regarded as more important than length by most women, as discussed in question 9 above.)

3. I want to watch my wife sleep with someone else. Is that normal? (As I've found in my own research, this is also a very common sexual fantasy among men. For a detailed look at the science of cuckolding, check out this article.) 

2. Is "rimming" safe? (Like any sexual activity, there are always going to be some potential health risks--however, there are also ways to make it safer.) 

1. Injaculation: Is it dangerous for guys to prevent ejaculation during orgasm? (Probably not. There isn't a single scientific source to my knowledge suggesting that this practice causes problems. In fact, this is actually a common and very successful technique used among men who are trying to learn better ejaculatory control in order to resolve premature ejaculation.)

For previous editions of Sex Question Friday, click here. To send in a question for a future edition, click here.

Want to learn more about Sex and Psychology? Click here for previous articles or follow the blog on Facebook (, Twitter (@JustinLehmiller), or Reddit ( to receive updates. 

Image Source: 123RF/Dmytro Denysov

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