Hi kiddo, do you know how sometimes you feel happy or sad? That's your brain making chemicals called "neurotransmitters" to help you feel those emotions. Serotonin is one of those neurotransmitters that helps you feel happy and calm.
Think of serotonin like a little worker bee that makes sure your brain and body are working together and feeling good. When you do things that make you happy, like playing with your friends or eating your favorite food, your brain releases serotonin to help you feel even happier.
But sometimes, if you're feeling sad or stressed, your brain doesn't release enough serotonin to help you feel better. This can make you feel even worse. However, there are things you can do to increase your serotonin levels, like exercising, getting enough sleep, and eating healthy foods.
So, serotonin is a chemical in your brain that helps you feel happy and calm. Just remember to take care of your brain and body so that your little worker bee can do its job and keep you feeling good!