Hi i am recently in confusion over Kurz, after reading his stuff I found that it sounded really good and scientically correct but i find it extremely difficult to disregard static stretching that, not exxaggerating at all pretty much every gym of any kind of martial art uses....doesnt work for getting kicks higher. So is he of truth of not???? I have personally noticed a substancial increase in flexiness but i practice both though all the classes i go to only use static stretches and they all seem to finally get to the correct level u can read up on his findings at http://www.stadion.com/column.html which i reccommend whether u have or havent heard of him ever before.