[wCYvMKAc]

...just wait for the time when you're practicing your kiai while driving...

Y'all do that, right?

When I first started, I did that for a few days because my kiai was too weak in the dojo.

This is a curious thread. I would not have thought of extrovert/introvert as something of significance, one way or another, to Kendo. But there's been enough comments about it to make me rethink that.