Super-fit gym-goer died after collapsing during a workout aged 36

Super-fit gym-goer died after collapsing during a workout aged 36 Stu Grant was born with a condition many people have without knowing it A 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 Grant, 32. But on March 17, he started to be sick, seemingly for no reason, at his local gym in Worcester, before having a seizure which was unrelated to his workout. And 24 hours later, Stu's family were told he had died from a genetic condition known as arteriovenous malformation (AVM). It's an abnormal cluster of vessels and doctors told his family it had likely been present from birth or early childhood, and had spontaneously burst and caused a fatal brain bleed. Recruitment manager Stu was not aware of he had the condition, which occurs randomly. Some people can live a full life never knowing they had an AVM, unless it ruptures. His family are raising awareness of the condition and fundraising in Stu's memory for an AVM charity working towards developing treatments and methods of detection. Jodie, a registered nurse from Canterbury, Kent, said: "Stu was the healthiest man I ever knew, he was good at everything, and he was the most amazing man ever. "I think he'd had a few headaches but it was normal, he just put it down to stress and normal life, and bought himself some blue light glasses for work. Suddenly I was getting a call from my mum to say my older brother was going to die, or be severely brain damaged. And he died. "I've never experienced anything like this, losing a healthy sibling with no warning. It fundamentally changes you. Now my other brother, James, and I are trying to get tested to see if we have an AVM. And there might be so many other people out there who have no idea they have an AVM too." Stu had no idea that he had anything wrong until his work out at his local David Lloyd gym. He was rushed to Worcester Royal Hospital where he was intubated in ICU, but was pronounced dead on March 18. Jodie said: "He felt a bit sick in the gym, he was sick, and then he had a seizure - all in a heartbeat, is what the consultant said to us. "He had a brain scan as soon as he got to hospital and the consultants could see it was AVM straight away. We were told he pretty much died soon after that, the doctors and nurses said it would have been in an instant and he wouldn't have known anything about it. "He was then taken to ICU, but we now know he was already dead then. As soon as they saw the scan they knew it was catastrophic but they had to do brain stem tests to be sure." AVMs can occur anywhere in the body - including the brain, neck, spine, kidneys, intestines and lungs - and often grow during foetal development or soon after birth. Jodie said the family were told that in some cases, when an AVM ruptures it may not be fatal. However due to the location of Stu's, which sat right next to his brain stem, it had a catastrophic outcome. Because Stu was on the organ donation register, his donated organs saved three lives. Jodie said: "His heart and lungs were too damaged from the trauma, but his liver went to a 30-year-old female who would have died without it. His two kidneys went to two older men in their 50s and 60s." Jodie said, while they pursue tests to see if they have an AVM too, the grieving family wish to raise awareness and fundraise. They are arranging a group walk up Snowdon in North Wales to raise money for The Butterfly AVM Charity, championed by influencer Nikki Lilly, who was diagnosed with a high-flow craniofacial arteriovenous malformation (AVM) in childhood. Jodie said: "We wanted to set up the mountain walk because he would have loved that. He'd have loved exercising outdoors with other people, and spreading awareness of AVM. Stu always wanted to be the best version of himself, and that came across to everyone he met. "He was doing so well and he was robbed of his life. The pain for us is horrendous. Something like this happening, it just rocks your world. If there could be more awareness and testing for AVMs, it would change lives for the better."