back in the day

"Back in the day" is a way to talk about how things were in an earlier time. People often use this phrase to talk about when they were children or teenagers:

Do you remember how, back in the day, we used to carry around those big portable radios?

But people also use this phrase to talk about what life was like hundreds or thousands of years ago:

Back in the day, if you wanted to eat, you had to learn how to hunt.

This phrase appears in these lessons: