3 cups of green tea a day seems like a lot. But let's see why green tea is so beneficial. It contains less caffeine than coffee but has enough to keep you awake and improve brain function. It can improve brain function, make you smarter and think quicker, as well as reducing you chance of developing Alzheimer's, along with reducing your chances of developing cancer. Green tea will help your body to burn fat and boost your metabolic rate. Drinking green tea can help to lower c