"Another persistent myth about hydration states that caffeine is a diuretic that makes you pee, and therefore caffeinated drinks like coffee and tea don't hydrate your body. The idea is based on the findings of a study from 1928 that looked at three people. Not only is that sample incredibly small by today's standards, but the finding has not held up to more recent experiments. So consider this myth busted."
— by Aaron Scott & Summer Thomad
