 So, you know, humans are mammals. We're very similar to other primates, where we have a lot of similarity to dogs and cats. Mammals need to play. They need to play physically. It's especially clear for boys. Boys need a lot of rough and tumble play, wrestling, running around. All kids do. And that's what our brains are kind of expecting. And we need to develop our social skills one-on-one or in small groups. You say something, your friend makes fun of you, you're a little embarrassed, and then it's over. You move on.