Inside the intense Chinese schools where kids as young as six are training to be Olympic champions

China's traditional sports system has met great success for years since the country returned to the Olympic scene in 1980 after a nearly 30-year hiatus.

However, the grueling training that children go through in hopes of becoming the next Olympic champion might be too much for them-and their parents-to tolerate. Changes to the system are unfolding at sports schools across China as people begin to question the methods in place.

Here's an inside look at the intense physical training children endure in Chinese sports schools.