There is a lot of Vitamin C in a single kiwi; so much so, in fact, that it provides almost the entire daily recommended mount. Vitamin C is essential for boosting the immune system since it improves blood circulation and detoxifies the system.  In fact, some studies suggest that drinking kiwi tea regularly can reduce the incidence of the common cold. Plus, the double dose of antioxidants in kiwi tea mean that your body constantly fights off free radicals, thus boosting your health and lowering chances of life threatening illnesses.