Why is black Friday, new years day, and the day after Easter the top 3 slowest days of the year at grocery stores?

Question

I worked for grocery retail for years.  The day before Thanksgiving  was traditionally  the busiest day of the year is the day before Thanksgiving, lots of people lots of purchases. 

Answer 1

Maybe customers eat so much on Thanksgiving, New Year's Eve, and Easter that they aren't hungry the next day, so they don't want to go grocery shopping.

Or maybe they have enough leftover food to eat that they don't need to go grocery shopping.

Answer 2

People are always too hungover, they just order from postmates

Answer 3

Black Friday is always busy but all the other ones people are celebrating 

Answer 4

Well I'm staying in a tent outside krogers for deals on food I'm going to  storm in and go crazy

Answer 5

It's because psychologically, the mental residue from holiday feasting temporarily gives people the sense that they have more foodstuffs in their house than they actually need.  This nagging realization temporarily blunts the urge arising from social norms, which commands them to buy because their neighbors are buying.

To put it another way, it's satiation.  It's as if you're asking what makes a guy go to sleep after orgasm.