A rejuvenated Lewis Hamilton said on Thursday that he was more committed to Formula One "than ever" aged 41 and believes he trains harder than any other driver.
The seven-time world champion has made a strong start to the season with Ferrari and is fourth in the championship after two races, 18 points behind leader George Russell of Mercedes.
Hamilton finished third in China to claim a podium place for the first time since joining Ferrari ahead of the 2025 season, and he said he had been putting in the hard yards ahead of this week's Japanese Grand Prix.
"I was in Tokyo between this race and the last race, I've run like 100 kilometres," the Briton said.
"I know that none of the drivers I'm racing against have trained as hard as I am and giving it what I am, especially at my age.
"I love that, that I still have that drive to push myself," he added.
Hamilton boasted that he was returning to his hotel after a morning run just as other drivers were getting up.
"The commitment is there, more than ever," he said.
"I dedicate absolutely everything I have to this challenge."
Hamilton endured a nightmare first season with Ferrari last year, finishing sixth in the championship and suffering the indignity of becoming the first driver to be eliminated from Q1 at three consecutive grands prix.
His fortunes have changed markedly with new regulations and car designs this season, which have produced noticeably more overtaking in races than in recent years.
Hamilton got the better of teammate Charles Leclerc after a titanic tussle in Shanghai and he said he found battling drivers "much more fun".
"That's how racing should be," he said.
"It should be back and forth, it shouldn't be one move is done and then that's it."