But it's not just for breakfast.
Over the decades, cereal has even become a popular bedtime snack.
And who didn't love eating their favorite bowl of cereal as a kid and watching cartoons?
In honor of National Cereal Day, we're taking a look back at some of the most popular cereals that kids couldn't get enough of - and maybe still enjoy now as adults.
Watch the video above to see if your favorite made the list.
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