Some people want to believe that all calories are created equal. Sadly, this is not the case. It may be technically true that all calories contain the same amount of energy, but the nutritional value of what you eat is so much more important than that. Calories that come from satiating, wholesome foods are not the same as calories that come from processed, fatty foods that leave you feeling hungry shortly after eating them. Foods also have varying thermic effects, which affects your energy expenditure, making some calories more positively "effective" than others.
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