I just couldn't resist...when I was first learning, I used to spend every lunch break at work practicing outside in a local park. It was amazing to me how juggling two balls with two hands in itself was incredibly difficult. Adding the third ball by comparison wasn't that bad. One of the coolest things I discovered was that the juggling actually improved my kendo. Suddenly counter attacks that seemed so impossible to do were a snap, because I had been practicing timing for months on end. I love it when one hobby helps improve a different one.