Myth #2 — The Fat-Burning Zone: Why Your Cardio Machine Is Lying to You

Your gym's cardio machine says to stay in the "fat-burning zone" — peer-reviewed exercise science shows that total fat lost is determined by total energy output, not the fuel mix. Here's the evidence and the one swap that actually works.

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.