A woman recording herself at the gym caught a man filming her bottom.
The fitness fanatic, who goes by the name @marzil10 on TikTok, was horrified when she rewatched the video she'd taken to study her workout form.
As the clip starts, it shows her in front of a mirror, partially bending down near some heavy dumbbells on the floor.
Her phone was behind her, propped up on a piece of equipment.
The video - which has been viewed two million times since being shared on TikTok last week - then shows a man walking in front of the camera with his gym bag, partially blocking the shot.
He places his bag on the floor, and as he does, the woman's camera shows his screen - which was focused on her bum.
The man asks her a question, and she answers, "sorry, no you're fine", before rushing back to pick up her phone.
It wasn't until she checked the video in her car that she noticed the man appeared to be filming her.
She captioned the video: "I'm disgusted. I was recording myself but it looks like I wasn't the only one."
She posted the video with hashtags, including #wtf, #gymfail, #whatdoido.
In a follow-up video, the woman explained what had happened: "So what basically happened was I was working out and taking a video of myself to see my progress and my form.
"So I set up my camera, my phone against a machine and this man walked by.
"And I was like, 'oh I need to move it', because it's in his way.
"So I apologised and said, 'oh no you're fine', but little did I know he was recording me.
"So it wasn't until I was done working out and I came into my car and I rewatched my video and realised that he was in fact recording me.
"I felt so disgusted, my stomach literally dropped.
"He's lucky I was running late for work otherwise I would've ran in there and been like, 'What the hell?'"
The TikToker said she reported the incident to a manager at the gym, and that they are going to try identifying him with security camera footage.
The manager also said they would file a report once he's been identified.
TikTok users were outraged after seeing the clip.
"She was recording HERSELF, not him," one wrote. "He had no right to record her."
"This is why I don't feel comfortable going to the gym," another said. "They need an all female gym."
