real life Hadouken

This clip from a National Geographic special shows this martial arts guy throwing around "chi" and like knocking people out, moving people, even when they can't see him etc. Gonna have to watch for this special, this clip doesn't give a very good explanation, left me wanting to know more, like wtf heh. Especially at the very end where a scientist type guy doesn't react at all to a different guy trying that stuff on him, then the martial arts guys give very very disapointing explanations.