Ana represented her counyry in the 2000 Olympic Games in Sydney and won a gold mebal in Pan-American games in Santo Domingo in 2003.ln2003,she also won the Wrld Track Championship in Paris, France,making her the world champion in the 400 meters.ln the 2004 Oloympic Games in Athens, the whole of Mexico stopped for one minute to watch Athens, the whole of Mexico stopped for one minute to watch Ana run the 400 -meter race,where she won the silver medal.