Bodybuilding star Calum von Moger is reportedly fighting for his life after jumping out of a window and causing severe injury to his spine, according to multiple outlets.
Generation Iron, a popular bodybuilding website, reported the Australian actor and renowned bodybuilder jumped out of a second-story window on May 6 ... which they say left him hospitalized in critical condition.
The outlet says von Moger is in the ICU ... where he's undergone surgery to treat his injuries.
The reasoning behind the alleged act hasn't been confirmed, but there are reports the 31-year-old has had a rough go of it lately ... even feuding with his parents.
But, just last week, von Moger -- a 3x World Fitness Federation 'Mr. Universe' winner -- posted on social media, vowing to be a better person.
"Everyone has a past. We've all been through hard times. I admit. I messed up bad many times," he wrote.
"But I don't care about dwelling on negative thoughts of the past. All I care about is that I learn from my mistakes and become a better person. I'm trying my hardest to stay strong but I have my days too."