I have always compared my exercise routine to a bear: Other than the machining job, when it is winter I dont do a ton of exercise except some simple indoor stuff. But once spring, summer, and fall hit, I am out hiking on trails through the prairie in my state, biking the trail that goes around my town (with about 30 mile round trip), and swimming when the weather is warm enough. Then winter hits and I go right back inside.

To that end, I dont get sick with anything, never mind Covid.