New research published in Sexual medicine journal provides evidence that repeatedly engaging in structured sexual fantasies can improve a person’s sexual well-being and sexual desire. Researchers found that writing about erotic scenarios several times a week tended to reduce sexual pain and performance worries, and increase overall sexual pleasure. These findings suggest that simple cognitive exercises performed at home may serve as an effective tool to enhance relationship intimacy and individual sexual health.
Human sexual function largely depends on where people focus their attention. Attention controls how individuals perceive and process sexual information in their environment. People can pay attention to external physical stimuli, but they can also pay attention internally to their own thoughts and imagination.
This inner attention gives power to sexual fantasies. When people use their imaginations to create vivid mental images, cognitive processes that support emotional regulation and memory take place. In the context of sexuality, these internally generated mental images act as incentives to activate sexual arousal even in the absence of physical stimulation.
Research suggests that more frequent sexual fantasies are often associated with healthier sexual functioning. People experiencing sexual difficulties often report a lack of sexual fantasies.
Rui Miguel Costa, an assistant professor at the Faculty of Health Sciences at the European University in Lisbon, Portugal, and a researcher at the Center for Research in Sport Sciences, Health Sciences and Human Development, wanted to see if intentionally encouraging people to daydream would lead to measurable improvements.
“Sexual fantasies are an understudied topic, and interventions based on enhancing sexual fantasies are even less studied,” Costa says. “Several studies suggest that having sexual fantasies can increase sexual desire and improve sex life. Therefore, it was critical to consider whether an easily implementable intervention developed to stimulate sexual fantasies would improve sexual desire and well-being.”
The authors hypothesized that guided fantasy exercises would linger in people’s minds about their partner’s erotic expressions. The researchers thought that by keeping these thoughts active, the motivational systems associated with sexual desire might become more responsive. They also wanted to see if focusing on pleasurable mental images could block negative thoughts that often cause sexual pain.
To explore these concepts, scientists recruited 60 heterosexual adults in Portugal. Participants were young adults, a demographic chosen because although they generally experience frequent sexual fantasies, sexual functioning remains variable. All individuals in the sample reported having had a sexual relationship with a partner of the opposite sex in the past 4 weeks.
The researchers randomly divided these 60 participants into two equally sized groups of 30 people. The first group was the experimental group, which was instructed to complete a specific sexual fantasy task. The second group served as a control group and completed a similar task without sexual content.
Before starting the main part of the experiment, all participants visited a university laboratory and completed a baseline questionnaire. These surveys measured various aspects of sex life, including baseline levels of sexual desire and general sexual pleasure. The survey also assessed levels of sexual distress, including sex-related frustration, anxiety, and guilt.
The first questionnaire also measured cognitive distraction during sexual activity. Cognitive distraction refers to when a person becomes worried about their body image or sexual performance and loses focus on intimate moments. Finally, participants rated the clarity of their mental images, specifically how clearly they could picture their partner in their minds.
After completing the baseline survey, participants began a 4-week home-based intervention. The scientists asked an experimental group of 30 people to write short stories about erotic episodes at least twice a week. These participants used an online form to describe a sexual scenario with an attractive partner. This can be real, completely imagined, or a combination of both.
This prompt encouraged the experimental group to write freely. They were able to use explicit language, describe physical sensations, and focus on the emotional aspects of the fantasy. Before and after each writing session, participants answered short questions about their current arousal and emotional state.
Meanwhile, the 30 people in the control group followed nearly the same routine. I also used an online form to write short stories at least twice a week for four weeks. However, the researchers asked the group to write about fun, non-sexual social events, specifically dinners with friends.
The style and structure of the writing prompts were adapted to the experimental group, with only the themes changing. The research team monitored compliance with the writing practice throughout the four-week period by tracking submitted online forms. We also sent weekly email reminders to help participants stay on schedule.
After the four-week period ended, all 60 participants returned and completed the exact same set of comprehensive questionnaires they had taken at the beginning of the study. When the scientists compared the baseline survey to the final survey, they found that the experimental group showed significant improvements in all areas measured. Participants who completed a sexual fantasy writing task reported a significant increase in sexual desire compared to the control group.
They also experienced an increase in general sexual pleasure. Practicing sexual fantasies not only increased positive emotions, but also helped reduce negative emotions. The experimental group showed a significant reduction in overall sexual pain.
They also reported fewer cognitive distractions during sex, and specifically showed less worry related to sexual performance. In contrast, the 30 people in the control group showed no significant positive changes in any of these areas and even reported a slight decrease in sexual desire.
The researchers also found that the experimental group experienced an increase in the vividness of their partner-focused imaginations. By regularly practicing these brain teasers, these people became better at creating detailed mental images of their partners.
“Without making any a priori hypotheses, we tested the effect of the intervention on how vividly study participants could imagine their partner in daily life following a daydreaming exercise,” Costa told PsyPost. “This effect has been confirmed, and this enrichment of fantasy life may contribute to increased sexual desire and well-being, as well as a stronger connection with your partner.”
The authors interpret these overall findings through the lens of attentional shifting. They suggest that repeated partner-focused sexual fantasies can help people distract from anxiety and performance reviews. Instead, the brain learns to focus on pleasurable and emotionally rewarding expressions of intimacy.
Mental images are known to evoke stronger emotional responses than just thinking in words. By actively creating positive emotions related to sex through imagination, participants may have weakened their habit of self-criticism during sex. This change provides evidence that structured fantasies can be an effective way to enhance an individual’s overall sexual experience.
My advice to people who want to apply these findings to their own relationships is simple. “Embrace, nurture, and enjoy your sexual fantasies. Enjoy the excitement, fun, and mystical sensations they evoke while your mind wanders,” Costa recommended. “Even if you don’t plan on making these fantasies a reality, this may improve your sex life and reduce your worries about it.”
“If you like to write, try writing it down. If you decide to write, you can also use some predetermined questions for each fantasy you have (for example, describe characteristics of your partner, describe sexual acts, things you say to each other, what each other feels and does, etc.).”
Although this study provides promising evidence, the authors note that there are some limitations that need to be considered. First, this experiment relied on a relatively small convenience sample. This means that participants were drawn from a group that was easy to contact, such as local university students.
“Although the fantasy exercise we tested was performed in a non-clinical sample, we still showed that it has the potential to reduce sexual pain and distraction during sexual activity, as well as increase desire and pleasure,” Costa explained. “However, this study was exploratory and warrants replication. Also, it is currently unknown whether this type of intervention is effective in reducing sexual difficulties in clinical populations.”
This study also relied on a completely self-report questionnaire. Although this is a standard method for measuring subjective emotions such as desire and distress, self-reports can be influenced by participants’ desire to provide expected answers. The researchers note that they cannot rule out the possibility that simply expecting to feel better may have contributed to some of the positive changes.
Future research should address these limitations by studying larger and more diverse groups of people. A larger sample size would allow scientists to see whether men and women respond differently to sexual fantasy interventions. “It will be important to replicate this study with a larger sample, so we can see, for example, whether the effects are similar for men and women and for people with relationships of varying lengths,” Costa said. “Another important goal is to evaluate this intervention in clinical populations.”
Future studies should also include long-term follow-up evaluations to see if the effects of the 4-week intervention persist over time. On the other hand, the results of this study provide a new perspective on the inner workings of human intimacy. “Sex life is made up of sensations, emotions and imagination. This study highlights the importance of a rich and vivid fantasy life,” Costa said.
The study, “The Role of Sexual Fantasy on Sexual Desire, Distress, and Sexual Troubles: A Randomized Controlled Study,” was authored by Pedro Campos, Isabel Real, and Rui Miguel Costa.
