London 2012 boss Lord Coe is returning to his days of sporting prowess - by trying his hand at rhythmic gymnastics for Sport Relief.
He and John Bishop are each leading teams of celebrities in a range of disciplines in order to raise cash for the charity.
The former Locog chief was for many years used to breaking the tape on the finish line as a middle distance champion, but is now twirling a ribbon in the Clash Of The Titans challenge.
Lord Coe - whose team will perform a routine to the Dolly Parton hit Nine To Five - said: "I'm going to offer my team a mixture of psychological and physiological advice to make sure we win.
"I've been through these really close competitions before. I know how to win - we will know how to win as a team."
And John, whose squad is performing to Kaiser Chiefs song I Predict A Riot, said: "My team are focused in the same way five-years-olds are whilst on a bouncy castle - we are all going to do our best and hopefully nobody will be sick in the process."
The battle will feature during the BBC's Sport Relief night TV broadcast on Friday evening which will also feature a synchronised swimming contest between Greg James and Patrick Kielty, who will join professional squad Aquabatix.
Lord Coe's team features James, Richard Bacon, Olly Murs,Sally Phillips and Winter Olympic medallist Amy Williams, while Bishop's line-up includes Kielty, O lympic boxer Nicola Adams, Freddie Flintoff, Nick Grimshaw and Helen Skelton.
They will also take on a track cycling event and a swimming relay, with Clare Balding hosting their efforts.