Why we eat breakfast

In North America and Europe, breakfast often consists of bacon, eggs, and toast. However, anything nutritious can be eaten in the morning. So why do Westerners then associate these foods with breakfast?

The word 'breakfast' means different things depending on the language. For example, breakfast as the day's first meal was tied to fasting before taking the Eucharist, but this same meal can mean 'small lunch' in French or even 'light supper' in Italian.