Jack Laker is only 15 years old, but he's winging his way to the US to compete in the World CrossFit Games in August.
He's training for 20 hours each week for a shot at the title of World's Fittest Teenager.
Jack's passion for the sport started when he was just 11.
"Mum got into CrossFit first and said I'd love it," he says.
"I did it just to help my rugby, to get fitter and I just fell in love with it from then."
CrossFit has since taken over as his sport of choice.
And now he's off to Wisconsin to compete against 19 other athletes from all over the globe.
"The CrossFit Games is the world stage, the Olympics really, like being an All Black," Jack says.
To qualify in the top 200 competitors, he had to film five weekly workouts and upload them online.
The next round was four workouts in four days, where Jack was ranked 14th out of the top 20 qualifiers.
He says the four-day competition will be gruelling.
"It could be swimming and running, some gymnastics, some weightlifting, some army-style workouts, you never know," he says.
"Some workouts are released about a month before and some will be released half an hour before you do it."
Preparing for the competition is a family effort. Both his mum and sister do CrossFit, and dad Richard trains with him.
"We used to be pretty equal, I used to beat him, but now he's got it all over me," he says.
The World Crossfit Games will be Jack's first-ever overseas competition, but coach Mac Hira has high expectations.
"I think he's going to do really well, we're hoping for a podium finish."
And despite a hectic training schedule, the Year 11 student is keeping his priorities straight.
"School's only a minute walk away, so I usually come in around lunchtime and then after school."
Working out in all his free time and raising the bar each day, in the hope of becoming the fittest teen on earth.