If you have that sort of staircase, it is absolutely worth getting hold of some fairly solid broom-handle or a bit thicker, wide enough to hang from comfortably, and hanging it by strong cord (sash-window cord is ideal) or rope round behind several bannisters (for strength) so you can have a bit of a dangle if your back ever feels dodgy. I had stairs that I could do that with in the last place that I lived, and simply hung from the half-a-broomstick if my back ever “went”, and nine times out of ten it cured it. I asked my GP about it and she said, “Oh yes, it stretches the muscles back into place a bit” as though everyone knew that!
Do not ever hang from the top of a door! Never never never! The pain when the damn thing swings shut and you don’t have time to let go is really remarkable.
I spent many happy years without my back going, put it that way. It might work for you; and it is unlikely to do you harm – unless you swing on it like a trepeze in a spirit of joie de vivre (as it might be at Christmas after the brandy butter) and let go at the wrong moment…
Repletion suggests that there is no need to impute a meteorological component to that fleeting bout of inappetance. Just a temporary difficulty in getting airborne.