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A new case study provides biological evidence that a post-menopausal woman can induce orgasms solely through the use of pelvic floor muscle exercises, without any direct genital stimulation. The findings indicate that these non-genitally stimulated orgasms trigger a surge in the hormone prolactin, mirroring the physiological response seen in typical sexual climaxes. This research was published in the International Journal of Sexual Health.
Orgasms typically result from direct physical stimulation of the genitals, but evidence indicates they can also occur through mental imagery or specific muscle movements. Previous research demonstrated that a premenopausal woman could induce orgasms using tantric techniques, a practice involving deep breathing and mental focus to control bodily sensations and sexual energy.
This earlier case was confirmed by a rise in plasma prolactin, a hormone released during sexual climax. However, it remained unclear whether this ability relied on the higher levels of ovarian hormones found in younger women or if it could occur after menopause. Consequently, the researchers aimed to determine if a post-menopausal woman could achieve these outcomes using a systematic routine targeting the pelvic floor.
The pelvic floor is a hammock-like group of muscles at the base of the pelvis that supports internal organs like the bladder and uterus, and plays a primary role in sexual response and control. The team sought to validate the experience using objective biological markers rather than relying solely on the participant’s description. Confirming the physiological reality of these experiences provides evidence for potential new therapeutic avenues for women facing difficulties with orgasm.
“I am generally interested in the neurobiology of sexual function, and in particular how the brain is organized for sexual arousal, desire, orgasm, sexual pleasure, and sexual inhibition. Recently, I started studying people who can have orgasms without genital stimulation (Non-Genitally Stimulated Orgasms, or NGSOs),” said study author James G. Pfaus, an assistant professor at Charles University in Prague and the director of research for the Center for Sexual Health and Interventions at the Czech National Institute of Mental Health.
“Women seem to be able to do this better than men, and the ability seems to come from training of the pelvic floor muscles and breathing exercises, either through tantra or pelvic floor therapy. An obvious question is whether these orgasms are ‘real,’ meaning whether they are accompanied by objective markers similar to those found during genitally stimulated orgasms (GSOs). We used the hormone prolactin as our objective measure, since it increases at orgasm (and the only other reasons it would go up would be a pituitary tumor, nursing, or extreme stress).”
“This occurs because at orgasm the neurotransmitter dopamine is instantly inhibited by both opioid and serotonin release. Dopamine in the hypothalamus keeps prolactin inhibited, so when it is inhibited, prolactin is released from inhibition. Prolactin increases reliably in both men and women during orgasm and stays elevated for at least an hour after.”
The new study focused on a 55-year-old woman who had undergone a hysterectomy and was not taking hormone replacement therapy. She had trained in a specific method called the “Wave Technique,” which involves rhythmic flexing and relaxing of the pelvic floor muscles. This training originally involved using a small jade egg to sensitize the muscles, but the participant had advanced to performing the movements without any device.
The experiment took place in a private hospital room where the participant remained fully clothed. The participant engaged in three distinct testing sessions, each separated by 48-hour intervals to ensure her hormone levels returned to baseline. These sessions included a 2.5-minute orgasm induction, a 10-minute orgasm induction, and a 10-minute Pilates workout which served as a control condition.
To measure physiological changes, a registered nurse drew blood samples fifteen minutes before each session, immediately afterward, and fifteen minutes post-session. The scientists analyzed the blood for prolactin to see if the muscle-induced orgasms triggered the expected hormonal release. They also measured levels of luteinizing hormone, follicle-stimulating hormone, and testosterone to track other potential endocrine changes.
In a separate session, the participant used a Bluetooth-enabled biofeedback device called the Lioness 2.0 to record muscle activity. The researchers modified the device to prevent any vibration or direct clitoral stimulation. This ensured the device only recorded pressure changes inside the vagina generated by the participant’s muscle movements.
The blood analysis revealed hormonal shifts following the muscle-induced orgasms. After the 2.5-minute session, prolactin levels rose to 110 percent of the baseline measurement. Following the 10-minute session, prolactin levels increased even further, reaching 141 percent of the baseline.
The findings indicate that “NGSOs are real from a physiological and psychological standpoint, and that probably all women can be trained to induce them, regardless of their hormonal status (pre-versus post-menopausal),” Pfaus told PsyPost.
In contrast, the Pilates workout resulted in a 12 percent decrease in prolactin levels. This differentiation suggests that the hormonal spike was specific to the sexual release and not merely a result of physical exertion. While exercise can affect hormones, it did not mimic the prolactin surge associated with orgasm in this context.
The researchers also tracked testosterone levels during the sessions. Testosterone increased slightly after the 10-minute orgasm session and the Pilates workout. This aligns with known data suggesting that acute physical exercise can elevate androgen levels in women.
Data from the Lioness sensor provided a visual representation of the physical activity during the orgasms. The device recorded rhythmic contractions occurring at intervals of roughly 7 to 15 seconds throughout the session. These contractions appeared as spikes in muscle tension that matched the participant’s subjective experience of climax.
During the Lioness session, the participant reportedly experienced over thirty distinct peaks within ten minutes. The sensor data showed a pattern of “push and pull” contractions that built up tension leading to each spike. The researchers noted that the participant vocalized during these peaks, signaling the moment of release.
“It is likely that the pelvic floor muscles are tensing around the nerves that carry information from the clitoris, vagina, and cervix into the spinal cord, and that women who learn this are sensitizing the nerve fibers to the abdominal and pelvic floor stimulation,” Pfaus explained. “So it is a very real phenomenon, and one that offers new vistas for women with orgasm difficulties.”
“Likewise, we have recently conducted a similar experiment on hypnotically induced orgasms, which show the same increase in prolactin. These orgasms are more likely to be ‘top down’ than ‘bottom up,’ although all women and men who show them have abdominal and pelvic floor reactions as the orgasm occurs.”
“The practical significance is that probably all women have this ability and it is just a matter of learning how to control the abdominal and pelvic floor musculature. It means that orgasm is not something your partner ‘gives’ you, but something you control in your own body and brain.”
A primary limitation of this research is that it is a case study involving a single participant. While the results provide strong biological evidence for this specific individual, they may not universally apply to all women. The participant was highly trained in a specific technique, which may be difficult for the average person to replicate without instruction.
Despite the small sample size, the study challenges the common misconception that orgasms without genital touch are fake. “It is common to disbelieve women who can have NGSOs induced by fantasy or the kind of pelvic floor movements we observed here. Likewise, it is common to think that orgasms induced by hypnosis are a party trick, and that people having them are simply faking it for the hypnotist. You cannot increase your prolactin at will. It is an objective marker of orgasm, so it is not faked.”
The scientists suggest that future research should involve a larger group of participants to verify these findings across a broader population. The researchers express an interest in studying men and women who can induce orgasms through other non-contact methods, such as hypnosis. Expanding the participant pool would help determine if this ability is a general human trait or specific to certain individuals.
Another goal for future study is to use functional magnetic resonance imaging, or fMRI, to observe brain activity during these non-genitally stimulated orgasms. Comparing brain scans of these experiences with those of standard orgasms could reveal how the brain processes different types of sexual pleasure. Such imaging could map the neural pathways involved in generating orgasm through muscle movement alone.
Ultimately, the researchers hope to investigate whether teaching these pelvic floor techniques could help women who suffer from lifelong difficulties achieving orgasm. If women can learn to sensitize their pelvic nerves through exercise, it might offer a non-pharmaceutical treatment for sexual dysfunction.
“Studies on orgasm are very difficult to get approved by institutional research ethics boards,” Pfaus noted. “There is a general fear that bad things could happen studying something so personal and intimate. And this is true even if, for example, the person’s partner is stimulating their genitals in a totally private space. NGSOs of course do not require direct genital stimulation and occur when the participant is fully clothed. So, in addition to their clinical significance, NGSOs may open the door for more study of orgasm function (e.g., in fertility) and the neurobiology of orgasm in general.”
The study, “Non-Genitally Stimulated Orgasms Increase Plasma Prolactin in a Menopausal Woman,” was authored by James G. Pfaus, Roni Erez, Nitsan Erez, and Jan Novák.
