umm , The Discovery Channel isnt exactly , well , overly concerned with Accuracy when it comes to its Reportingh and Specials on Martial Arts . Basically they take whatever the Interview Subject says as Gospel , and report is as if its the Truth . Its oftentimes NOT .
That being Said , there ARE Methods to Conditioning the Body with Striking training , the "Iron Body" methods are out there , but they have VERY Little (read : nothing) to do with MOVING the Tendons along the Body in any unnatural manner .