A good rule of thumb for how much water is to drink half of your body weight in fluid ounces. If you weigh 150 pounds, your goal would be 75 ounces of water a day.
Green tea is another great beverage to enjoy to bolster your body's natural defenses.
Kefir is a fermented, yogurt-like beverage made from different types of milk, such as cow, sheep, and goat.
Whether you make your own or purchase a brand of lemon ginger tea at your supermarket, this herbal tea is a great choice to help keep your immunity up.
Both orange and grapefruit juice are nutrient-rich and provide more than 100% of the total vitamin C you need a day in one serving.
Tomato soup is often recommended when you have a cold or flu for it's vitamin C, but refreshing tomato juice will provide similar amounts of vitamin C.