France. Sarcelles. Birthplace of the Art of Displacement. That's where we began last week's training days with the Yamakasi founders Chau Belle-Dinh and Yann Hnautra and several of the Majestic Force team. And what a place - an incredible forest carved in two by an enormous wall, surrounded by trim-trail training obstacles perfect for movement training. Here the spirit of the discipline was born before it moved to Evry and Lisses in the city, and it's easy to see why.