can someone tell me how iron shin training actualy
makes your bones harder to break? i know that the dit da jow is supose to help, but i dont understand how rolling and beating you shins makes you bones harder or denser.

Does hiting them somehow causes them to act in the same way as breaking you bones, where as they then grow back stronger? should you hit them as hard as you can or as hard as you can stand

"Civilize the mind but make savage the body"