“Anything is possible. You just have to figure out how.”

Jason Mayweather, who was born with cerebral palsy and uses a wheelchair, is concentrating too intently to take any notice of the sign on the wall of a gym in Woolloongabba, on Brisbane’s southside.

The 40-year-old is up on his feet, sweating profusely, and slowly putting one foot in front of the other — walking with the support of parallel bars and the encouraging words of exercise physiologist Ernest Starowicz.