So in this section, we're going to talk about yo-yo maintenance. It seems kind of funny 'cause when you tell people that there's actually a lot of different things we have to do to our yo-yos to get them to work right, it sounds kind of funny because after all they're just yo-yo's, you know? Use a string, yo-yo goes up and down. Usually, there's not much thought to it after that. But today, because we use so many different types of string, we've use ball bearings and plastic transaxles on the yo-yo's now. It makes a lot of difference when it comes to how we take care of our yo-yo's, how we maintain them. So in this section, we're going to talk a lot about how to pick the right kind of ball bearings for your yo-yo, how to improve the yo-yo's play and how to keep it playing good over a long period of time. So keep watching. Keep track of that, and that way you'll know when you might need to replace a string so it doesn't break, smash into something. If your yo-yo's making a funny sound, why it might be doing that, what you can do to fix that. Things like that help improve your yo-yoing skills in the long run.