Is it normal to feel hungry and tired 4.5 hours after a sushi buffet?

Today I skipped breakfast, went to the sushi buffet for lunch, went on a shopping trip at a Canadian tire, had a coffee at Starbucks, and than had 3 hours of conversation at my house, and when it was over, I was hungry and tired. I do not know why I am hungry 4.5 hours after a sushi buffet.

Is it normal to feel hungry and tired 4.5 hours after a sushi buffet?
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