I try to avoid even small crowds but when I have to get out, I wear my mask and use hand sanitizer after touching anything such as door knobs. For exercise, I take walks in my neighborhood instead of going to a gym. One thing I do is make sure I'm getting enough of is vitamin C, D, and E. I also use herbal supplements such as echinacea and elderberry, and drink a cup of green tea each morning with Manuka honey. Eat plenty of fruits and veggies each day and keep yourself well hydrated. ... View more