|Inside the head of Marlon|
|Around the Academy:
I'm Marlon Devonish and I was part of Britain's gold medal winning 4x100m relay team in Athens.
Watch my masterclass
Nerves can grab you in the blocks and you feel you might just fall out of the blocks.
And then when the gun goes, you just follow the two lines subconsciously.
You're aware of your competitors, but you're just in this bubble.
You have one opportunity to do it. The olympics is the ultimate.
Watch me in action and find out what a sprinter thinks out on the track.