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These Are the Most Effective Ways to Avoid Getting a Cold This Season
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Take Vitamin C (If You're Very, Very Active)

A recent review of medical literature concluded that, in most people, vitamin C supplementation does not reduce the incidence of colds. But there was one group that did seem to benefit: those exposed to periods of severe physical exercise, especially in extreme conditions. Try a vitamin C supplement if you're training for a marathon, are an avid skier, or are frequently active in very low temperatures.

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