Haha, this will be fun.
Hey kids, have you ever seen on TV characters such as Batman, and how they can always beat the bad guy? Well, other than pure luck, all their actions, such as the throwing of the batarang is all coming from the brain. The brain is what controls our thoughts, so when you feel excited over the new episode of Spongebob coming up, the feelings are being processed in your brain. The brain can do a lot more than just feelings, but it's the reason why you're moving. Our brain controls our bodies so we can move freely, like when we play sports, or like how Superman can fly in to save troubled souls in the burning buildings. This is called the nervous system, and if the nervous system is gone, you'd be as dead as the feeling when you finish your favorite television show. Other than movement or feelings, it's main purpose is to send and receive information, like Iron Man's computer program. Basically, the nervous system is as big as a superhero as Hulk. Obviously for these to work though, we have to power it somehow, so remember always be moving and thinking, and your nervous system will fuel you up for battle. In no time, you'll be swinging like Spidey!
Honestly, I'll apologize in advance for the cringe you perhaps felt. It's cheesy, but it'd probably work, if you need it longer, let me know.