Tag: 8 glasses rule

The widely circulated "8x8 rule" for hydration—that you need eight 8-ounce glasses of water per day—is an oversimplification, not a scientific fact. The truth is, the ideal fluid intake varies significantly from person to person depending on multiple factors, making the question of how many 8 oz glasses of water per day more complex than a single number.

The human body is composed of approximately 60% water, requiring consistent replenishment for optimal function. While the old “8 glasses a day” advice is a familiar starting point, the truth about what is the healthiest amount of water to drink in a day is far more personal and nuanced.