7. Wash Your Hands--A Lot! The more you wash your hands, the less likely they are to harbor cold and flu germs. Aside from washing your hands after going to the bathroom, or before eating, you should also wash them after touching anything that lots of other people have touched. Carry a small bottle of hand sanitizer gel around with you if there are no washrooms. Source: Prevention.com Read more on how an environmental toxin may increase the risk for Alzheimer’s Disease.