What I get from Alexander Arguelles

Alexander Arguelles is an interesting fellow. For one thing, he is extremely dedicated polyglot (see here for his regimen). 

View this video of Alexander marching back across a bridge speaking a Chinese text that he simultaneously listening to, in order to demonstrate shadowing, the technique he is said to have invented.

See here for a course in Japanese shadowing.

I know - at first encounter his approach sounds eccentric and extreme. 

Nevertheless, I like Alexander's approach of simultaneously listening and speaking with the help of and authentic piece of text. If you look into the theory, there's good sense behind it.