Tea has long been recognized for its medicinal properties. In a 2013 study published in Stroke: Journal of the American Heart Association, those who drank two to three cups of green tea daily lowered their risk of stroke by 14 percent.
Both black and green teas also contain potent antioxidants and are particularly high in catechins, a type of flavonoid that may help fight cancer. The combination of caffeine and L-theanine found in green and black teas may also improve concentration and focus, Meltzer Warren said. And for some people, the ritual aspect of drinking tea can induce relaxation and a sense of calm. (While raising taxes on it can catalyze a revolution. Just ask the British.)