It’s also a good idea not to smoke, which can make you more susceptible to colds, Patel said. Staying up-to-date on vaccines can reduce the rate of transmission and severity of certain illnesses, too. For example, if you get the flu shot, you’re more likely to have milder symptoms than someone who didn’t get their vaccine, he said.
Article source: https://www.huffingtonpost.co.uk/entry/experts-say-this-common-belief-about-getting-sick-is-wrong_uk_6984a6b1e4b0befe3755208a