>>11104095Tea (green tea in particular, black tea has a bit more) doesn't contain enough caffeine to be particularly useful as a stimulant. It has a little, maybe if you chugged a pot of it you would notice, but it's quite weak compared to coffee.
Green tea is still good for your health though. Black tea less so (maybe still a bit), although black tea stains your teeth something fierce. If you consume any substantial amount of black tea your life will become a war to keep your teeth from turning piss yellow.