You’re being duped folks! Long duration cardio training does not make you lose more fat and weight. If I had a dollar for each time I heard the phrase, “… but I need to do cardio so I can burn fat and lose weight…” I’d be rich. This statement couldn’t be further from the truth. I understand where the confusion comes. It’s really not your fault. You’re being hoodwinked by health and wellness companies who put on this persona that they are health experts. They are not. These are simply business savvy folks who misinterpret science and pass garbage on to you. Let me explain.
First, the respiratory exchange ratio (RER) says that fat is metabolized greatest when the body is at rest. This is true. However, the aforementioned wellness companies misinterpret this and say that the closer the exercise level is to low intensity, the greater the fat loss. Thus, they try to give you these easy to follow fat burning weight loss guidelines. Have you seen those ridiculous diagrams on cardio machines that say 55%-65% of max heart rate is the “Fat Burning Zone” (see image). We also have trusted magazines like Women’s Health and Fitness that give you a Fat Burning Zone calculator. If you plug data in to the Women’s Health and Fitness calculator you will see that they also recommend you work at approximately 60% max heart rate. We trust this information and are led to believe that lower intensity, longer duration activity equals weight loss. This is untrue. Continue reading