Spend time in nature, it will boost your self-esteem according to research at the University of Essex in England. Just 5 minutes can do a world of good and those first few minutes happen to be the most impactful. A study done in Japan even showed that people who spent two consecutive days in nature had increased immune functioning and their improved germ fighting defenses lasted a week afterwards. One reason for this could be the air borne compounds that plants produce called phytoncides that kill bacteria and fungi. This could be the best way for you to prevent a cold this year.
Too busy to hit a park or spend time in the yard? Even small doses count, just having a vase of flowers or plants around can do the trick.