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It is 20 years since Ben Johnson was stripped of his 100m gold medal and thrown out of the Seoul Olympics for using performance enhancing drugs.

There were drug stories before, and there have been plenty since, but none made the impact that his did in 1988.

I spoke to him about what has since become known as the dirtiest race in history as Carl Lewis, who was promoted to gold, had failed three drugs tests at the 1988 US Olympic trials, while Britain's silver medallist Linford Christie also failed a drugs test later in his career.

The fact that I am actually going to the Olympic Games kicked in for the first time on Tuesday when I went to pick up my kit.

Last month's qualifying shoot-off, followed by finding out my mum had suffered a heart attack and a World Cup meet in France had left me mentally exhausted, but I've had a few days of relaxation and now I'm raring to go.

I've also got like suits, shoes, tracksuits, a camcorder and the GB mascot.