Jackie Baxter, a keen hill bagger, wild camper and lover of the outdoors, describes her struggle after contracting Covid-19 at the age of 30. It’s early March 2020 and I’m plodding my way along a track in the Borders, exhausted and out of breath This seems a bit odd given that the gradient is virtually flat, I’m walking slowly and I’m used to long days in the outdoors. Putting it down to an “off” day, I push myself through the rest of the walk, getting more and more exhausted with every step and let Malky, my other half, drive home.…