Immune System Boost: Garlic was used to fight gangrene during the world wars—probably not a concern of yours, but it may be able to help you fight off a more modern-day ailment. This herb could help keep those cold-weather colds and flus at bay. The food's antioxidants can help your immune system run well; in addition to simply eating it, you could also try steeping garlic into a tea by steeping chopped garlic in hot water. Add a bit of natural honey to soothe your throat and cut some of the intense garlic taste.