Gym-goer died from hidden brain condition after seizure during workout

Hours after collapsing in the gym, the 36-year-old was gone10:57, 02 Sep 2026A super-healthy gym-goer died aged 36 after collapsing during a gym workout due to a hidden brain condition he never knew he had.Stu Grant was a fitness fanatic and "good at every sport he put his hand to", according to sister Jodie. But on March 17, he started to be sick, seemingly for no reason, at his local gym in Worcester.He suffered a seizure which was unrelated to his workout, and 24 hours later, Stu's family were told he had died a brain stem death - from a genetic condition known as arteriovenous malformation (AVM).Click here to get the biggest stories straight to your inbox in our Daily NewsletterAVM is an abnormal cluster of vessels and doctors told his family it had likely been present from birth or ea