"Leading up to the Olympics I was injury free and my training had gone well, so I went into the Games feeling good and confident. But four years is a long time in athletics. I'm getting older and it gets harder to recover between sessions, so I didn't take anything for granted when it came to retaining my golds," said the 33-year-old.
Recalling one particular moment from Rio that will remain in his mind for ever, Mo Farah narrated: "When I tripped in the 10k - that was honestly one of the hardest races of my life, so falling over nearly finished my chances there and then. The whole thing happened so quickly and all I could think about was all the hard work of training and sacrifice going to waste.
On whether he agrees with all those who are describing him as the greatest ever distance runner, Mo Farah said: "It's every athletes' dream to have your name in the history books. I never thought I would be up there alongside the sporting greats like Viren or Haile Gebrselassie. As a junior, I only thought one medal was possible, so to win four Olympic titles and five World Championship medals is a dream come true.
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Mo Farah said he was looking forward to peaking at the World Championships in London this summer.
"I would love to end my track career by winning gold in the Olympic Stadium - going back to the place where I had my greatest ever moments during London 2012. After the World Championships, I'll start looking at what I can do on the road and I've said before that I want to focus on the marathon.
Mo Farah, who has been nominated for the Laureus World Sportsman of the Year Award, said to compete for an award alongside some of the world's best was a "huge honour".
"Everyone in my category -- Usain (Bolt), Andy (Murray) LeBron (James) - are at the top of their game and these guys will go down as true greats of their sport. To have my name amongst them is very special.