Matthew Pinsent travels to Rio - host city of the 2016 Olympics - to meet young athletes hoping to compete there, and at London 2012.

He meets a young man who's father's death at the hands of drug lords spurred him to take up boxing.

Four brothers tell of their dreams of playing rugby at the Rio Olympics.

And a young judo fighter from the north of Brazil explains why it's not always best to listen to mum. Show less