Why do women squirt, the reasons science can offer

A question with two parts

"Why do women squirt" really hides two questions. The first is about mechanism, what happens in the body that leads to the release. The second is about purpose, whether squirting serves a biological function at all. Science has a reasonable answer to the first and only educated guesses for the second.

It is also worth saying at the start that not all women squirt, and that is completely normal. Squirting is one possible part of sexual response, not a goal and not a measure of how good sex is.

What happens in the body

Researchers have pieced together a likely sequence from small studies, especially the ultrasound work of Salama and colleagues published in 2015.

1. Arousal builds. Blood flow increases to the genitals, including the tissue around the urethra and the front vaginal wall.
2. The bladder fills. In the Salama study, women emptied their bladders before stimulation, yet ultrasound showed the bladder had filled noticeably again by the time they were close to squirting. Why this happens so fast is not fully clear.
3. Pressure builds in the front wall. Stimulation of the area often called the G-spot, which sits next to the urethra and the Skene's glands, creates a feeling of fullness or of needing to pee.
4. The pelvic floor relaxes. Instead of holding back, the muscles let go, and the fluid is released through the urethra.

The fluid that comes out is mostly diluted urine, with a little Skene's gland fluid mixed in, as you can read on our page about what squirt is made of.

The role of the front vaginal wall

Many people who squirt describe it as happening with firm, rhythmic pressure on the front wall of the vagina, a few centimetres inside. Ernst Graefenberg described a sensitive zone there in 1950, which later became known as the G-spot.

This zone lies against the urethra and contains the Skene's glands, which Milan Zaviacic later described as female prostate tissue. Pressure here stimulates the urethra, the glands and the surrounding erectile tissue at the same time. That may explain both the feeling of urgency and the release. Our guide to the Skene's gland shows how these structures sit together.

Squirting can also happen with other kinds of stimulation, including mainly external touch, so the front wall is a common route rather than the only one. Some people find that combining external clitoral touch with internal pressure works best, while others notice it only with one of the two. Our article on G-spot vs clitoral stimulation compares the two approaches.

The role of relaxation and letting go

A recurring theme in what people describe is surrender. The feeling just before squirting often resembles the urge to pee, and the natural reaction is to tense up and stop. People who squirt regularly often say they learned to relax through that sensation instead.

This points to the pelvic floor. These muscles control the release of urine. When they stay tight, the fluid stays in. When they relax during high arousal, it can come out. That may be one reason why squirting tends to be more likely when someone feels safe, unhurried and not worried about the sheets. Practical tips for building that sense of ease are in our guide on how to squirt.

Why some women squirt and others do not

This is the part science cannot yet answer well. A few factors probably play a role, and they likely combine differently in each person.

• Anatomy. Zaviacic showed that the amount and position of Skene's tissue varies a lot between people. The shape of the urethra and pelvic floor also differs.
• Type of stimulation. Someone who rarely has sustained pressure on the front vaginal wall may never encounter the sensation that leads to squirting.
• Comfort with the sensation. Some people stop when they feel the urge to pee, which may prevent a release.
• Pelvic floor tone. Very tight or very weak muscles can change how the body responds, though this has not been studied well.

Studies on squirting have been small, often with only a handful of participants, so none of these points comes with firm numbers. Our page on whether all women can squirt explores this further.

Does squirting have a purpose

Here the honest answer is that nobody knows. Several ideas have been suggested.

One idea links it to the Skene's glands, whose fluid may help protect the urethra from infection. Another sees squirting as a side effect of strong arousal and pelvic floor release, with no special purpose of its own, much like other body responses during sex. Some writers have speculated about a role in reproduction or partner bonding, but there is no solid evidence for that.

What we can say is that squirting is not harmful, not a sign of illness and not necessary for orgasm, pleasure or fertility. Some people experience it with orgasm, some without, and some only in certain situations.

Common myths about why it happens

A lot of ideas about squirting circulate online, and some of them cause needless worry. Here are a few worth clearing up.

• "Only very sexual women squirt." There is no evidence for this. Squirting depends on anatomy, stimulation and comfort, not on character or experience.
• "If she squirts, the partner was skilled." Technique can help, but squirting mostly reflects the body of the person squirting. It is not a trophy for anyone.
• "Squirting proves an orgasm happened." It does not. Squirting and orgasm are separate and can happen independently.
• "Anyone can squirt with the right trick." Some people never squirt, whatever they try, and that is completely fine.

These myths add pressure, and pressure works against the relaxation that squirting seems to need. You can read more in our article on squirting myths.

When to talk to a doctor

See a gynecologist, urologist or pelvic floor physiotherapist if you leak urine during daily life, feel pain during sex or when passing urine, notice blood or unusual discharge, or find that leaking during sex is unwanted and upsetting. Coital incontinence is a real and treatable condition, and it deserves care rather than a label.