The lure of Tokyo 2020 is just too much for Alistair Brownlee, who has said he aims to compete at this summer’s Olympic Games.
Though he turns 32 in April, the Brit triathlete is feeling fit and ready to go again.
Storming to two triathlon gold medals at the London and Rio De Janeiro games, having gone close in Beijing at just 20, Brownlee is still enjoying the pursuit of greatness.
"A year ago I wouldn't be doing this, because I knew I couldn't cope with another bad injury," he told BBC Sport. "I just wanted to be able to run and compete and enjoy it.
"But in the past year I haven't been injured. I've really enjoyed training and I've really enjoyed competing, and preparing to compete.
"And so the decision crept up on me a bit: I want to go to another Olympics, and I want to see what I might be able to do.
Alistair his brother Jonathan, who won silver in 2012 and bronze in 2016 and is two years his junior, had always strived for the Olympics and Brownlee admits he couldn’t pass up another opportunity to perform.
"The people around me - I think most of them expected it, even though I didn't expect it myself. But I do feel quite good about it,” he said of his comeback.
"I'm happy, because I want to be racing on the biggest stage, and being competitive. The 12-year-old me dreamed of going to one Olympics. So to pass up the chance of just seeing where it leads me this year would be a bit mad."
Having dominated the sport, not always winning but always bowling people over with his endurance, his last victory came more than two years ago, while he finished 44th during his last World Series race.
Now, while nothing is certain, he wants to go into the race this summer feeling he can win and, though his body is older, he feels he is in peak condition compared to previous games.
"It's quite easy to get carried away and think, I'll only go if I can win medals," he admitted.
"Well maybe, but I need to look at it one step at a time. Do some World Series racing, see how competitive I am. Try to qualify, see how that goes.
"In my head, the perfect scenario is that I'm in a position where I'm stood on the start-line and I think I can win the race. But if I'm instead thinking I can scrape a third here, or I'm thinking, I could help another British athlete win a medal here - I would be happy with that. I would.
"In a really strange way, I'm in a better position now than I was before the last three Olympics. In 2008 I didn't think I'd be going. In 2012 at this stage I'd torn my Achilles. And in 2016 I'd had an operation on my ankle; there were issues with my hamstring. This time I've got nothing wrong with me at all."