Conan Visser from Brisbane, Australia stuck to a strict diet of deep fried chicken, burgers and chips for 30 days.
Documenting the challenge on his TikTok account, the fitness fanatic said he gained 8 kilograms in weight throughout the month which saw his diet lack an adequate amount of fibre.
Visser said that although he experienced a number of side effects including changes to his appearance, signs of liver and kidney damage and constipation, the biggest effect was on his mental health.
“One of the biggest differences I saw was my mental health decline,” he admitted in one video.
“My self-esteem, my confidence went down and my conflict resolution and the way I interacted with people all went down. That is because this type of diet releases more serotonin and drops the dopamine, so therefore you not only feel unmotivated and less positive, you're also happier being on the couch and doing less.”
In another video, the Children’s charity founder said he experienced severe stomach pain.
“This journey is just super weird. A lot of highs and lows. I'm just starting to feel gross and I'm hating the weight getting put on.”
By day 10 of the challenge, he was forced to visit the hospital.
“I went to the doctor's today, it's getting so bad,” he explained in another video.
“We got my bloods, urine, stool, and then she rang the hospital and I had to go straight to hospital to get a CT scan and they pushed me in front of everybody else to get it.”
The CT scan results showed his intestines were blocked up because of the lack of fibre in the meals.
At the end of the 30 days Visser reported he spent $1000 AUD on KFC and consumed over 100,000 calories.
Conan Visser, who next wants to try 30 days of alcohol is somewhat of a controversial figure in his hometown of Brisbane.
Founder of I Can I Will, an anti-bullying charity for children with special needs, the charity was investigated by Australia's the Office of Liquor and Gaming Regulation over claims they sold raffle tickets for a luxury car that was never delivered.
Earlier this year, the charity, of which he is a founding president of, faced two counts of failing to comply with the rules of a game and two counts of issuing a ticket for a game which did not include the information prescribed.
Tickets for the raffle were sold at $40 AUD each, however the car company withdrew from supplying the prize - a vinyl-wrapped Audi A7.
They said that it became “increasingly evident that Conan’s practices were not aligned with what was promised”.
Since then, Visser stepped away from his charity and set up a podcast of the same name instead. He also set up an OnlyFans account in a bid to spread and fund his anti-bullying message to “a new space and bigger audience to help more people.” Rather than calling his work “charity work” he now refers to it as a “social enterprise.”
Taking to Instagram to announce the move, Visser said he never wants “to be held to the impossible high standard of a charity CEO ever again.”
The anti-bullying advocate is a convicted domestic violence offender after he pleaded guilty to assaulting his ex-partner Sam Cooper in December 2018.
Speaking after his conviction, the young woman recalled the night her ex-boyfriend attacked her
“I was in bed asleep, and all of a sudden he's breaking into my room,” she told 7News.
Conan Visser broke into the woman's house while she slept and began to strangle her.
“The most terrifying part of the whole experience was not being able to breathe.”
She has also claimed that he previously drugged her by spiking her drink. Ms Cooper appeared outside court alongside three other women who also claimed to be victims of Visser. He has only ever been charged in relation to the crimes against Sam Cooper.