Bronze medalist Flavio Canto helps young people through free lessons . More than 1,000 Rio de Janeiro youths are enrolled in his Reaction Institute . Judo teaches discipline , humility , courage and determination , Canto says . The loss led Canto -- who later won bronze at the 2004 Olympic Games -- back to his native Rio de Janeiro . The Olympics have been a boon for the city of Rio, which has seen its population grow by more than 20 percent since they began in August 2014. Nominations are open at CNN.com/Heroes .
Bronze medalist Flavio Canto helps young people through free lessons . More than 1,000 Rio de Janeiro youths are enrolled in his Reaction Institute . Judo teaches discipline , humility , courage and determination , Canto says . The Olympics have been a boon for the city of Rio, which has seen its population grow by more than 20 percent since they began in August 2014. Nominations are open at CNN.com/Heroes .