Before dissecting the Urban X program, it is vital to understand the roots. KFM was developed by Justo Dieguez and Andy Norman after decades of analyzing real street fights. Unlike Karate or Taekwondo, KFM is not a sport. There are no referees, no weight classes, and no rules.

Core principles of KFM include:

The entire first month of Yellow Level focuses on the Shell (Elaborate Defensive Cover - EDC) .

You will learn that clenched fists break easily on skulls. Yellow Patch students replace traditional punching with:

The pendulum is the engine of KFM. In Yellow Level, students practice the "Linear Pendulum"—rocking weight from the back foot to the front foot and back. This generates knockout power without a backswing. Drills include:

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