Britain's Mo Farah admits he has thought about trying to break the world record in the 1,500 metres.
The Somalia-born, British-raised long-distance runner has been one of the stars of a remarkable period for sport in the UK.
Last summer Farah did the Olympic double in his hometown, taking both the 5,000 & 10,000 metres crowns at London 2012.
As if that was not enough, last night he completed the same feat by winning the 5,000m at the World Championships in Moscow to secure the double-double - something only achieved by the Ethiopian great Kenenisa Bekele.
“I woke up this morning smiling,” a rather bleary-eyed Farah told Press Association Sport this morning. “I am very happy.
“What a year I’ve had. It has been, you know, hard work but I enjoyed this year.
“It is great being able to achieve what I have achieved.
“I can’t quite believe it at all. It is something I never dreamt of. I am honoured to be able to achieve what I have.”
There were a few sore heads around the British team hotel this morning and Farah turned up in sunglasses despite insisting he only had a “very light night”.
He said his celebrations involved going for a meal and relaxing with his family in the Russian capital, where he has wife, Tania, and step-daughter, Rihanna, with him.
Both came to his post-race press conference last night, when he described yesterday’s 5,000m win as “definitely the sweetest, by far” as he overcame tough competition, a stitch and the exertions of racing in the 10,000m just six days earlier.
“I was tired,” he admitted. “I had to dig in deep but it has definitely been worth it. It was hard work and it was challenging.
“It is a great achievement and I have had great messages from everybody through Facebook, Twitter – it has been amazing.
“I just can’t believe so many people have been congratulating me, telling me ’well done’. There have been some great messages.”
Farah’s performances in Moscow have sealed his status as arguably the greatest British athlete of all time.
The only thing now missing from his resume is a world record, which Bekele holds both over 5,000m and 10,000m.
“What motivates me is just keep training, keep thinking about my position and I want more,” Farah said. “That is what motivates me. I love being on the podium.”
So when he says more, does that mean the world record?
“I don’t know what will happen,” he said. “Every year is different. Next year is a quiet year but the next year after that it is the world champs again.”
Farah is undoubtedly at the peak of his powers right now and very few look capable of knocking him off his perch.
He is, though, now in his thirties and will be 33 when the Olympics head to Rio de Janeiro in 2016.
“Hopefully I will be there,” he added. “If I stay injured-free and focused, I can get ready for that. But you have to just take one year at a time.”
If the next few years are anything like the last, Farah better get a bigger trophy cabinet.