A reaction is like when you touch something hot, and your hand quickly moves away. Your body is saying, ‘Whoa, that’s too hot!’ and it makes your hand jump back. This is your body’s way of keeping you safe. It’s like your own superhero power inside you that helps you stay out of trouble.
Another way to think about a reaction is like when you eat something sour, like a lemon. Your face might scrunch up, and you might make a funny sound. Your mouth is telling you, ‘Wow, that’s really sour!’ This is a reaction showing that your body notices something different.
Imagine when you see a friend after a long time, and you feel super happy and give them a big hug. That’s another type of reaction. Your heart feels happy, and your body wants to show it by hugging. Reactions are how we respond to things happening around us, like how a mirror shows your reflection when you look at it. It’s your body’s way of talking back to the world.