Sion, 38, from Porthmadog, Gwynedd, began his fitness journey in 2013 after his first year at university in Liverpool.
Returning home, he was shocked when someone made a jibe about his weight.
This was the spur for him joining a gym, which became a life-changing moment.
“[I] actually fell in love with fitness and the gym,” he added.
“I knew from that moment on, like that’s what I wanted to do.”
Sion went on to qualify as a nutritionist and then opened his own gym.
But while he was helping other people shed weight and get healthy, his own fitness got put on the backburner.
It was only after the birth of his son in 2018, and putting on five stone, he decided he had to take action again.
His family had a picture taken in a photo booth, and he said: “I couldn’t believe it was me [in the image].
“I was a fitness coach, a gym owner and I was overweight and it did not make sense.
“I was putting weight on because I had been covering myself with like hoodies and everything.
“I didn’t want my son to grow up and look back on photos and I’m there overweight and stuff, so I just made that decision to get myself in shape.”
