Maybe you've quit caffeine because you think it undermines the peace and balance that comes from your yoga practice. But, in addition to its cancer-preventing properties, here's another reason to drink green tea: A study published in the European Journal of Cardiovascular Prevention and Rehabilitation showed that green tea improves blood flow and the ability of arteries to relax, thus helping to prevent heart disease, reports Reuters. Are you a green tea drinker? If so, why? Which type do you like best?