The thing that rhymes with “tandemic” has left us all slightly in bits. We’re being told that we’re entering the roaring 20s and that it’s going to be 24/7 decadence and sweaty dancing ahoy. But as I swap my summer tracksuit bottoms for my winter ones, like a UK petrol tank, my fun levels are deeply in the red. I’ve no holiday booked to Mykonos, no cocktail nights with the gals planned and the wildest...