You can't "boost" your immune system. The best thing you can do is to not hamper it. Eat varied diet, ensure you get sane proportions of basic nutrients and ma

You can't "boost" your immune system. The best thing you can do is to not hamper it. Eat varied diet, ensure you get sane proportions of basic nutrients and make sure to support your gut bacteria. Don't poison yourself with crap food. Stay away from sugar and alcohol. Try to maintain your aerobic capacity even if you stay at home. When push comes to shove this additional capacity might make it easier for you to survive.