Tips from the very top

1 of 12 Sally talks through how big a part visualisation played in her success at the Barcelona Olympics

2 of 12 Then Sally and Steve ask the competitors to picture the next event - Drag Race

3 of 12 Already a dab hand in focusing, Tom relaxes unaware of who is about to pay him a visit....

4 of 12 ......And the hands on his shoulders belong to his idol Michael Johnson

5 of 12 Look who's behind you. Cat, Sam and Tom can't believe who popped around to say hi

6 of 12 Still star struck, the crew go for a jog with the fastest man on the planet

7 of 12 As Charlotte gets going with the tyres Michael tells her: "Try to anticipate when the second and third tyre kick in."

8 of 12 What do you mean too old? Colin shares a joke with Michael

9 of 12 Tom in wonderland. Afterwards he said: "I'm still in shock, I never thought this would happen."

10 of 12 "Drive your arms," says Michael to a watching Liz and Leigh

11 of 12 Superman hasn't lost his magic. Michael powers into the tyre training as if it was Atlanta 1996

12 of 12 Just in case no one believes them, the contestants get a picture with a living legend