If you tell someone you have a cold, the flu, covid- any respiratory infection- you will probably get suggestions for how to manage it. Vitamin C, chicken noodle soup, over the counter remedies, are among dozens of remedies to try once you get sick, but if you want to avoid these illnesses, there is one simple suggestion most experts recommend- wash your hands. “ Think about all the activities that you use your hands for: eating, texting, driving, opening door- the list goes on and on,” said McLar...