I was practicing with a manrikigusari (sp?) basically, it is a chain about 3 or 4 feet long with two steel handles on either end. on the end of the handles is steel knobs and that is what you attack with. Well, I was practicing with it, and working on a spin. The chain caught my elbow, making the overall length of the weapon significantly shorter than what it should have been. Cracked me righ in the knuckles with the end of it. Has been five days, and they are STILL sore. I must have hit a pressure point in doing so, because my entire hand went numb and I couldn't even feel that I had dropped the weapon. Quite strange.
Just thought I'd share that with you. Figured you'd find it humerous. I laughed after I got feeling back in my hand.