How to prevent yourself from getting a cold
Scrub Hands frequently - https://www.ajpmonline.org/article/S0749-3797%2801%2900323-3/abstract Scrubbing is what makes it effective
Apple a day - https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/2210883 Looks like it does not actually keep the doctor away but your more likely to have less prescription medications so that must mean something
Exercise 3-4x a week
Sleep - Just find the right amount for you.
Human Interactions - Keeps your immune system up. https://www.wnycstudios.org/podcasts/radiolab/articles/funky-hand-jive
Wearing a mask when out in public - Precovid study done in japan: https://www.sciencedirect.com/science/article/pii/S2211335516301553