Time and time again we hear discussions around whether penis size affects how enjoyable sex is for women.
But a new study suggests it's actually the size and shape of a woman's vagina, rather than the size of the boat (if you catch our drift), that impacts her ability to orgasm.
The study, conducted by researchers at Indiana University, found that women with a clitoris positioned within 2.5 cm or less to their urinary tract will be able to orgasm through penetrative sex.
This close proximity allows the woman to enjoy sufficient friction around her clitoris which will enable her to orgasm during sex, they said.
However, if a woman's clitoris is located 3cm or more away from her urinary tract, achieving orgasm through penetration is practically impossible.
Commenting on the study, Elisabeth Lloyd, from the Kinsey Institute for Research in Sex, Gender and Reproduction at Indiana University-Bloomington, said knowing how you measure up may help you better understand your sex life.
"Women can do this measurement themselves or with their partner, to help explain their own sexual experience," she told MedicalXpress.
She added that a woman doesn't necessarily have to orgasm during sex in order to enjoy it.
"We've learned in our research there are so many women who do not have orgasm with intercourse on a regular basis," she said.
"To put this banner of healthiness as having orgasm with intercourse kind of stacks the deck against these women who, because of their anatomy, cannot have orgasm with intercourse."
The study is published in full in the journal Clinical Anatomy.