Sure, bro. Go offer a cashier an apple and watch the remaining light behind their eyes fade as you receive the world's largest eye roll. Please report back!

When I was a cashier at a gas station it was anything but sedentary. Had to clean the store, stock stuff, lift a lot of heavy things and walk A LOT 10,000 steps was a minimum

Unless it's one of the very few places that lets them sit down, I would say it's way less sedentary than the average office job. You clearly have never worked as a cashier, and possibly never with the public...