• News
    • Tech News
    • AI
  • Gadgets
    • Apple
    • iPhone
  • Gaming
    • Playstation
    • Xbox
  • Science
    • News
    • Space
  • Streaming
    • Netflix
  • Vehicles
    • Car News
  • Social Media
    • WhatsApp
    • YouTube
  • Advertise
  • Terms
  • Privacy & Cookies
  • LADbible Group
  • LADbible
  • UNILAD
  • SPORTbible
  • GAMINGbible
  • Tyla
  • FOODbible
  • License Our Content
  • About Us & Contact
  • Jobs
  • Latest
  • Topics A-Z
  • Authors
Facebook
Instagram
X
TikTok
Snapchat
WhatsApp
Submit Your Content
One detail leaves scientists baffled after couple had sex in MRI scan machine

Home> Science

Published 15:01 6 Jan 2026 GMT

One detail leaves scientists baffled after couple had sex in MRI scan machine

The results challenged some long-held beliefs

Rebekah Jordan

Rebekah Jordan

google discoverFollow us on Google Discover

Every couple has their own way of keeping things interesting.

While some couples might try new positions or role-play to spice up the bedroom, others have taken their intimacy to entirely new locations, all in the name of science. Yes, really.

Dutch scientist Menko Victor ‘Pek’ van Andel wanted to understand what happens to the human body during sex.

To do so, he got his fellow researchers, Ida Sabelis and her boyfriend Jupp, to hop into an MRI machine for a bit of action.

Advert

Scientists wanted to know what happens in the body when you have sex (BMJ)
Scientists wanted to know what happens in the body when you have sex (BMJ)

Despite the claustrophobic interior, the couple managed to get it on in a spooning position under Pek's watchful eye.

While Ida said the experience of having sex in an MRI machine 'wasn't romantic', the fact that the couple managed to have sex in there without Viagra was 'a testimony to mine and Jupp’s happiness'.

Interestingly, the researchers learned that the penis bends to accommodate the shape of the woman's vaginal canal during intercourse. This discovery contradicts historical beliefs held by thinkers like Leonardo da Vinci, who assumed the penis stayed straight and cylindrical during sex.

Beyond this, Pek's findings revealed additional mysteries that left the researchers puzzled.

Between 1991 and 1999, Pek expanded his research to include eight couples and three single women who would have sex inside the hospital's MRI machine 13 more times. Every male participant was required to take Viagra to achieve arousal in the rather unsexy environment inside an MRI machine.

In all 13 cases, the woman's bladder would rapidly fill up during sex (Lu ShaoJi/Getty)
In all 13 cases, the woman's bladder would rapidly fill up during sex (Lu ShaoJi/Getty)

Unlike Ida and Jupp, these participants would have intercourse in the missionary position.

To the scientists' surprise, what they discovered was that in all 13 instances, the woman's bladder would rapidly fill up during intercourse. Why this happens, however, they're not quite sure.

According to Pek, it could be 'evolution’s way to force women to urinate after sex' in the aim to 'avoid urinary tract infections.' Still, the explanation remains pretty theoretical with no conclusive answer determined.

"In every final scan we could see a big, full bladder, even though most of the women went to the toilet before they went inside the MRI," Pek explained.

As awkward or uncomfortable as experiments have been throughout time, this study turned out to be a huge success among people who were fascinated by the results.

"People who’d actively tried to shut us down were later providing quotes to the press, or listing their participation on their resumes," Pek said. "Success has many fathers, obviously."

Featured Image Credit: Lu ShaoJi via Getty
Science
Health

Advert

Advert

Advert

  • Bright orange shark with rare genetic mutation leaves scientists baffled
  • Man killed in tragic MRI accident after doctor reportedly forgot to tell him to remove one item
  • Scientists discover disturbing brain glitch that leaves millions of people feeling like aliens
  • Trump's $500,000,000 bet on old vaccine technology leaves scientists sceptical

Choose your content:

2 hours ago
3 hours ago
5 hours ago
6 hours ago
  • NEMES LASZLO/SCIENCE PHOTO LIBRARY / Getty
    2 hours ago

    Scientists make shocking discovery that changes everything we thought we knew about Mars

    The Red Planet wasn’t always dry and inhibitable

    Science
  • Chip Somodevilla / Staff / Getty
    3 hours ago

    NASA responds after Donald Trump announced he will be releasing files on aliens and UFOs

    The president has been accused of distracting from the Epstein files

    Science
  • Joe Raedle/Getty Images
    5 hours ago

    NASA report reveals failures that left two astronauts stranded for nine months to be one of worst in its history

    There was a major issue with the spacecraft

    Science
  • Sergio Bonilla/Getty
    6 hours ago

    How Starlink is fueling space junk crisis following approval to double number of satellites in low earth orbit

    What goes up must come down

    Science