weight clothes

Photo: Rob Prideaux

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Mistake #2: Keeping Tabs on Your Weight by How Your Clothes Fit
You can drive yourself crazy weighing yourself every day—down a pound, then up two, then back down a few ounces all in 72 hours—so using clothes as way to gauge how well you're managing your weight can work, but only if the item you use to measure fits close to your body. Why? "Going up a whole pant size could mean a 10-pound weight gain," says Jennifer McDaniel, RDN, founder of McDaniel Nutrition Therapy in Clayton, Missouri, and a spokesperson for the Academy of Nutrition and Dietetics.

What you can do: Step on a scale. Once a week appears to be enough to keep weight in check, according to a 2014 study in PLOS One.