Here’s a great article, with references, that addresses the fat burning zone myth…

The fat burning zone is one of the most pervasive myths in the fitness industry that just won’t go away. Magazines constantly promote workouts in the fat burning zone as an effective way to burn fat and most cardio machines around the world have some type of sticker, or image clearly visible… Marc Perry, The Fat Burning Zone Myth: Don’t Be Fooled

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