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Are You Burning Fat or Carbs?

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319 views14likes7:33getfitwithpayasofficialOriginal Release: 2026-07-21

The body burns a mixture of fats and carbohydrates simultaneously, with fat being the primary fuel during rest, hunger, and light exercise, while carbohydrates become the main fuel during intense activity. The 'fat burning zone' is a misconception because while it burns a higher percentage of fat, it often results in fewer total calories burned compared to higher-intensity workouts. Fat leaves the body primarily through exhalation as carbon dioxide (84% of lost fat) and water, but this requires an energy deficit—burning more calories than consumed. Sustainable fat loss depends on overall energy balance throughout the day, not on specific heart rate zones or workout intensity.