So, brains are super important because they help us think and do all the things we need to do every day. But brains are pretty complicated and they look like big, squishy balls.
Imagine your brain is like a super special computer that controls everything in your body. It helps you see, hear, feel, smell, and taste things. It also helps you learn new things, remember things from the past, and make decisions.
If you hold your hand out and make a fist, that's about the size of your brain. But even though it's so small, it has over 100 billion little cells inside that help it work.
Sometimes people call the brain "brain balls" because it kinda looks like a ball and it's really important for our lives. So, it's important that we protect our brain balls by wearing helmets when we ride bikes or play sports, and by trying to avoid things that can hurt our brains like drugs or alcohol.