A young German woman is outraged after she was asked to leave her gym because her outfit was too distracting to men.
The 22-year-old, known only as Marny, was working out with her boyfriend at their local gym in Constance, Germany on Wednesday (local time).
She was wearing a new sleeveless exercise top, which exposed about an inch of her stomach, paired with high-waisted leggings.
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While running on the treadmill, Marny says a female trainer approached her and said she "couldn't train like this".
When Marny expressed confusion, the woman specified that she couldn't wear a sports bra at the gym.
"I was shocked because it wasn't a sports bra," she told The Evening Standard. "And even if it was, why not?"
The trainer said her clothing was "distracting for other guests around".
When she complained, Marny was told the gym's policy said men weren't allowed to wear tank tops to work out, while women could not wear exposed sports bras.
However she claims to have seen many men wearing tank tops at the gym, none of whom were ever asked to leave.
She told gym staff she would be cancelling her membership and went home, where she posted a photo of her outfit to Twitter.
"Just got kicked out of my gym, because my clothes were too 'revealing' and were confusing the men in the gym," she wrote. "What century are we in again? So sad."
To her surprise the tweet went viral, with hundreds of people around the world retweeting, liking and replying.
"The men should stay at home until they can control themselves in public spaces," one person wrote. "It's not for them to regulate women in their environment."
Despite repeated calls for her to "name and shame" the gym, Marny has refused.
"I never wanted to ruin the gym, as it is a small local one, not a big chain and even if they have done me wrong, I am not and don't want to be that person," she wrote on Twitter.