Myth #4 — The 8 Glasses of Water Rule: A Misread Paper That Outlasted Its Source

The '8 glasses a day' rule traces back to a 1945 recommendation that was widely misread — the original text noted that most of that water comes from food. Peer-reviewed reviews find no evidence for the rule, and urine color is a more reliable guide than a glass count.

Each Sunday, a neutral, no-supplements-to-sell exercise physiologist debunks one fitness-industry lie sold to you for the past 50 years. BCAA doesn't do what the bottle claims. Sweat is not fat-burn. Soreness is not effectiveness.