However, he declined to confirm if he will be making another attempt to become the first man to run the marathon in under two hours.
The 34-year-old ran in an experimental race under special condition in Monza, Italy in 2017 to clock 2:00.25 and though that mark was never recognized as an official work record, he has since gone on to break the world record in Berlin last year clocking an impressive two hours, one minute and 39 seconds.
"With the right training, the right environment and the right people, and with the right thinking, then all is possible. However, it requires someone to have the belief," he added.
"Not many people are thinking of running under the two hours mark. But if one intends to run and he has no belief in his mind, then he cannot do anything. But if your belief is in the mind and in the blood, beyond the skin and into the bone marrow, then it's possible," he added.
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