 And so he was trying to build up his butt muscles, and he got into the topic of activating your glutes and how impossible it is to activate your glutes. And unless you can activate your glutes, you can't build butt muscle like you can other muscles. You don't have to activate your biceps or your quads, I don't think, to lift weights and build them. You do your glutes. I don't know what any of that means. And he said there's only very specific exercises. So what's any of this mean?