Don't wait until you're sick to start sipping tea. Green tea has been shown to stop viruses in their tracks . . . in petri dishes. But researchers believe that the drink, high in the antioxidant catechins, improves the immune system's ability to fight infection.
If you're living caffeine free, pour yourself a cup of chamomile. The herbal brew has been found to increase the bacterial-fighting, plant-based compound polyphenols found in the bloodstream. Chamomile also acts as a mild sedative, which can help keep immune-depleting stress at bay.
Skip the soda and have some tea!
Flickr User kankan