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You're eating "diet" treats

Whether it's sugar-free candy or "healthy" low-sugar ice cream, these foods beg you to overeat. "Because they contain fewer sugars and calories, they can make you feel entitled to consume way more than you otherwise would normally eat," says Theresa Shank, RD, LDN, Philadelphia-based registered dietitian. For instance, you may eat an entire pint of low-calorie ice cream in one sitting. What's more, after doing it a few days in a row, it becomes a conditioned behavior and you'll crave it again the next night. A better option is to eat a controlled portion of the real thing occasionally, she says. For instance, scoop out one serving into a small bowl. And, enjoy it.