Now, Kamrun has trained as a personal trainer in Newport and hopes to inspire others to look after their mind and body after the effects of the pandemic.
Kamrun wanted to use his knowledge of the sport to help people with their fitness.
However, the 22 year-old from Wellington said he now puts as much emphasis on mental health after he saw first hand the effects of Covid can have when he was tested positive back in January this year.
"Exercise is so important now – some of my clients have had Covid and it has affected them so much, not just physically but mentally," he said.
"So now I have a massive emphasis on mental health as well as physical health. I had Covid back in January this year and it completely knocked me sick. I was bed-bound for four days, it wiped me out.
"So I know first-hand what it can do to you."
Kamrun started his job as a personal trainer at Alpha Athletic in Newport at the end of June 2020, and after his experience playing kickboxing all over the world, says he loves using his sport knowledge in his job.
"I started kickboxing at the age of seven and I absolutely fell in love with it," he said.
"I was quite naughty at school so I wanted to channel my energy into something positive. I found I was quite good at it so I went through the stages of getting my belts which took around four years.
"The black belt was probably the hardest thing I've ever done, it was tough and very gruelling. But I started competing way before I got that, probably when I was around eight years old and I was picked from the selection process.
"When I was 12 I competed in the World Champion Kick Boxing competition in Sicily and I was crowned the under-16 world kickboxing champion. I remember I fought a 16-year-old kid when I was only 12 so I did not expect to win.
"Then from there it all took off and I started travelling and competing around the world, from Austria, Ireland and all over the UK. I went to Lee Matthews British Military Martial Arts in Telford."