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Two male TV presenters failed to give birth after experiencing simulated labour.
Dennis Storm and Valerio Zeno took part in the experiment for their TV programme Proefkonijnen - or Guinea Pigs.
They were strapped into a simulator that used electrodes to send charges through the two men's bodies. These were meant to cause cramps as excruciating as the contractions of childbirth.
Simulating the experiment were two women, who told the presenters they would experience a lot of pain.
Zeno asks the nurse if the simulation would make him scream, to which she responds: "Yes, it definitely will."
At first, the duo attempt to laugh and joke while lying on the bed strapped into the simulator.
However, they quickly start to experience pain and are seen rolling around, screaming and writhing in agony.
As they progress, a nurse helps them by holding their hands and telling them breathing techniques, but they continue to feel extreme pain, with one curling up into a foetal position.
Polish woman in labour for 75 days
After two hours, both Storm and Zeno give up. Zeno says that while he knew women are stronger than men, he now feels guilty for asking his girlfriend to have a baby.
The length of labour can vary massively, but normally it is longer than 120 minutes.
Last year, one woman was in labour for 75 days. Joanna Krzysztonek from Wroclaw, Poland, went into labour with her triplets at just 21 weeks and lost one of the babies.
For the following two months, she had to lie upside down to prevent further contractions until the babies were strong enough to be born.
The world's first pregnant man was Thomas Beatie, who was born a woman but underwent a sex change to become a man. He retained his female genitalia and became pregnant because his wife Nancy was infertile.
Beatie is recognised as by the Guinness World Records as the first married man to have a baby, in 2008. He legally became a man in his home state of Oregon, but subsequently gave birth to three children.
He had genital reconstructive surgery in February 2012. He kept his womb and ovaries so could add a fourth child to his brood, but doctors have advised against this.