Feng Shui is also a powerful martial art, practiced mostly in northwest California. Crack teams of trained Feng Shui ninjas will invade your home while you are away, and using great subtlety, rearrange your furnishings just so such that your life and everything in it will just go to hell. Afterwards, your love life will be ruined, you'll lose your job, your car will spontaneously combust(1) , and you will find yourself unsatisfied by your meals, despite putting on tremendous amounts of extra weight. This is not a martial art to be trifled with...

(1) This actually happened to a friend of mine. Granted it was a 1978 Chevrolet Caprice Classic, but that's not the point...