Green Tea

Experts also believe that green tea works to prevent blood sugar spikes following a meal by slowing the action of a digestive enzyme called amylase. In addition it's thought to increase the metabolic rate.

One of the most recent studies published in the American Journal of Clinical Nutrition revealed that the consumption of tea rich in catechins, which are found in green tea extract, lower both body fat and cholesterol levels.

Another perk is that green tea has less caffeine than your daily cup of coffee. So how much is good? The opinions change from expert to expert. While one study showed that Japanese men who drank 10 cups of green tea a day remained cancer free, another showed that women who drank five cups or more of green tea had fewer recurrences of breast cancer.

One website suggests meeting in the middle with four or five cups a day to experience the benefits of green tea. However, you can drink as much as you'd like. So far, the only known side effect from this wonder drink is insomnia, which can be attributed to the caffeine.