London 2012: What does sporting legacy mean?
The people in charge of bringing the Olympic and Paralympic Games to London promised a lasting sporting legacy.
Martin explains what this means, but to do so we have to go back in time to 2005 when London was awarded the Games.
This clip was made for Generation Inspiration?: A Newsround Special, which was first shown on CBBC on 25 July 2013. Watch the programme here on iPlayer.