The law of diminishing returns is keeping Kiwi rower-turned-cyclist Hamish Bond working hard as he eyes the 2020 Tokyo Olympics.
Bond ticked another box on his way to yet another Olympic Games, when he won bronze in the time trial at the Gold Coast Commonwealth Games on Tuesday.
But he's well aware there's plenty more work to do in his fledgling career as a cyclist if he wants to make a fourth Olympic Games.
Bond won double Olympic gold in the rowing pair with Eric Murray, the duo compiling an eight-year unbeaten run that encompassed nearly 70 races, but has turned his attention to cycling since the 2016 Rio Games.
He's happy with his progress to date, but admits there's still work to do.
"It's just a continual evolution of small returns and keeping those things running smoothly," Bond said following Tuesday's bronze medal.
"There's the power I can put out, there's the position and aerodynamics I can hold, and then there's the equipment in terms of making you as fast as possible.
"I'm in a pretty good place, but there's always more you can do."
Although the Tokyo Games are Bond's long-term aim, he realises there's still a lot of ground to recover in his new discipline if he wants to push for a spot.
"World champs and Olympic Games are another level entirely," Bond said. "I'm realistic about that."
Bond was satisfied with Tuesday's bronze-medal ride, which was 32 seconds slower than Australian Cameron Meyer's winning effort and just two seconds off Englishman Harry Tanfield's second place.
But he knows there's still scope for improvement, even if the gains won't be dramatic.
"It was a a well-executed, good performance - I don't think it was the ultimate that I can achieve on a time trial bike, but it's an ever-increasing diminishing returns in terms of progress," the 32-year-old Bond said.