Originally Posted by
Knifefighter
The same problem applies whether it is about hitting someone in the chest or shutting them down. Shutting someone down is a misconception and is much different in fighting when someone is throwing full force strikes to your face, head and body than it is when you are in an unrealistic "steering wheel" position.
The other problem with chi sao is that it gives people the impression that they can, indeed, "shut someone down." The fact is, in a real fight, both fighters will probably land shots. Only theoretical non-fighters expect to fight without ever being rocked.
Additionally, much of fighting ability is the ability to take decent shots. If the majority of one's time is spent taking hits to the chest, he will not develop the ability to take the shots that are an inevitable result of fighting.