Ha! Ninjaed!
This is helpful while the bottle is open to atmosphere, as you don’t want to create bubbles that will provide surface area for additional CO2 to come out of solution (pretty much what violent shaking does).
After the bottle is closed, CO2 will slowly come out of solution until equilibrium is reached between the CO2 gas pressure above the liquid, and the remaining CO2 in solution in the liquid. It will reach this same equilibrium faster if you shake it, but shaking it will not cause a different equilibrium to be reached. In other words, if you’re going to be leaving your bottle sealed overnight, it doesn’t much matter if you drop it on the floor on the way to the fridge; it just means the bottle has reached equilibrium now instead of two hours from now.
I tried this thinking maybe it would help keep pop fizzy.
I thought it was maybe making the pop go flat faster. But I was hardly scientific about it and may have had it in the fridge too long.
My theory was the bottle wants to spring back into shape so basically I would be creating low pressure in the bottle and drawing the CO2 out.
Someone call the Mythbusters.
Unless you store your bottle on the door shelf, and so are jostling it every time you open the door, you are vastly overestimating how quickly the bottle comes to equilibrium. In my refrigerator, the bottle was noticeably less hard after one day than after two.