A snack is like a little meal that we have in between our big meals of breakfast, lunch, and dinner. It can be something simple like a piece of fruit or a small sandwich. Snacks make our tummies feel happy and full when we get hungry before mealtime. It's just like when we get a little tired or thirsty, we might have a quick drink or rest before carrying on with our day. Snacks are kind of like that little boost we need to keep us going until our next meal!