Meet Iwan Thomas - Former European, Commonwealth & World Champion, Olympic silver medalist and now that bloke sometimes on the TV/Radio.
Iwan is a British sprinter who represented Great Britain and Northern Ireland at the Olympic Games in the 400 metres, and Wales at the Commonwealth Games.
He's the current UK 400m record holder, having run a time of 44.36s in Birmingham on 13 July 1997. He was also a member of the team which holds the UK 4 × 400 m Relay record of 2:56.60, set in Atlanta, USA in the Olympic final on 3 August 1996.
Iwan now presents at Olympic and Paralympic games, plus takes part in various TV shows. He's passionate about encouraging people to be active and continually raises money for charitable causes through his fitness challeneges.