A 30-year-old influencerhas died following a gruelling attempt to pile on 55lbs and lose it all again as part of an extreme fitness challenge. Dmitry Nuyanzin dedicated himself to consuming 10,000 calories a day, far exceeding the 2,500 calories for men recommended by the NHS, in a bid to promote hisweight-loss programme.

The fitness coach, who had more than 43,000 Instagram followers, had hoped to demonstrate the effectiveness of his programme, declaring that he would pay £100 to anyone weighing over 100kg who managed to drop 10 per cent of their bodyweight by New Year's Eve.

Gorging on burgers, pizza, crisps, pastries, and dumplings coated in mayonnaise, 30-year-old Dmitry was able to pile on at least 13kg in the space of just one month, going from 92kg to 105kg. Announcing his junk food 'marathon' on October 21, Dmitry told followers: "Friends! My WEIGHT LOSS COURSE is starting very soon, where you can win awesome prizes and, most importantly, build a beautiful body, learn how to eat well, and enjoy working out! I'll be losing weight with my students, so it'll be doubly exciting!"

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Throughout the challenge, Dmitry kept people updated on his progress, sharing images of himself dining on fatty foods. Outlining his diet in one post, Dmitry, who lived in the Russian city of Orenburg, revealed: "I am currently gaining weight for my weight-loss course, and this is my 10,000-calorie diet. For breakfast, I have a plate of pastries and half a cake. For lunch, I usually eat 800 grams of dumplings with mayonnaise. During the day, I may snack on crisps, and for dinner, I have a burger and two small pizzas, either at a café or delivered."

In his final Instagram post, dated November 18, the well-known content creator could be seen holding a bag of crisps and rubbing his stomach, in a video captioned: "I wanted it, and I got it!" Sadly, as reported by the Ostorozhno Novosti channel, Dmitry's heart failed in his sleep, and he passed away.

This came the day after Dmitry cancelled training sessions, telling friends that he wasn't feeling well and intended to see a doctor. He has since reportedly been laid to rest in Orenburg, while tributes have poured in for "an amazing person", remembered as "bright" and "positive".

One social media user wrote: "It is better to prove such theories not in practice. Rest in peace." Another added: "It's true. If you're not used to junky fries, fast food, it will indeed make you sick" A third person noted: "Well, if ever there was a cautionary tale, then this has to be it."

The British Heart Foundation warns carrying excess weight can have dangerous consequences for your heart. Its website says: "It can lead to fatty material building up in your arteries (atherosclerosis), increase your risk of high blood pressure, high cholesterol and type 2 diabetes. These are also risk factors for heart disease.

If the arteries that carry blood to your heart get damaged and clogged, it can lead to a heart attack. If this happens in the arteries that carry blood to your brain, it can lead to a stroke or vascular dementia."

Dmitry was a graduate of the Orenburg Olympic Reserve School and the National Fitness University in St. Petersburg, Mail Online reports. During his career, he is said to have worked training members of the Russian elite, as well as inspiring his many online followers. It's reported that Dmitry was married and had no children. At the time of writing, his official cause of death has not been given.

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