Episode 2: Eight Glasses a Day

Ever wonder who decided you need eight glasses of water a day? Spoiler: it wasn’t science. It was marketing.

In this episode of Lies We Bought, we unpack how a wartime nutrition memo turned into one of the most repeated health rules in modern history. From government guidelines to bottled water brands, hydration influencers, and luxury water culture, we explore how drinking water shifted from a basic necessity into a lifestyle, a status symbol, and a billion-dollar belief.

We trace where the eight-glasses-a-day myth actually came from, why bottled water became more about identity than hydration, and how brands like Evian, Perrier, Fiji, and Smartwater used marketing psychology to reshape trust in tap water. We also break down what the science actually says about hydration, why the evidence never supported 8×8, and how fear, branding, and convenience quietly rewired our habits. This episode isn’t anti-water or anti-health.

It’s about understanding how hydration became performative, profitable, and emotionally charged long before it became personal.