That moment you’ve been dreading has arrived (perhaps not for the first time). You or someone in your household woke up with a sore throat maybe, or a nagging cough, and you did the swab. Double red line. Dammit.

What to do now? “Pax and relax”? Sit it out and hope for the best? Go about your normal business (as an increasingly alarming number of “experts” seem to be advising)? Is it really all down to a matter of good luck, good genes and good health? Not really. The available science says that there are differences in outcomes for people based on the choices they make after they get COVID, provided they move quickly.