Water is the unsung hero of wellness, quietly supporting everything from clear thinking to strong muscles. But how much do you actually need to drink each day? The old “eight glasses a day” rule feels like a relic of the past—because it is. Truth is, your hydration needs are as unique as your fingerprint, shaped by your lifestyle, environment, and even what’s on your plate. Let’s dive into the science of hydration and uncover what “enough” really means for you.