Be careful you don't catch Covid then, Terry - I caught a dose just days after coming back to Oz end-April to fix a few things that were left by the wayside during the past 2+ years we've been stuck in VN by closed borders at both ends (VN and Oz). Everyone has different symptoms, apparently, and I was lucky to just feel ultra-lethargic with chronic diarrhoea and coughing from the lungs but no fever or chills.
But one thing I also noticed, hence this response, was a tendency to overbalance when making sharp turns or climbing/descending stairs. I'll stay close to the walls and anything else I can use to help stay upright(!) at least until my Covid finally disappears (very promising recovery this past week, with the thick red lines on the test-o-meter nearly gone now, thank goodness). But I'll still look for handholds when going up and down stairs at least for a little while - and when I can get back to VN and onto my bike for exercise every day that will hopefully restore balance all round. Maybe you could try pedalling around the hills of Cornwall to help restore your age-induced loss of balance?
