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1. says are accurate report trackers so new fitness not A .


2. of amount the Measuring burns body our calories .


3. to make poor decisions about their diet This may lead people .


4. researchers The walked they as volunteers 60 observed .


5. None cent per 20 below rate error an had devices the of .


6. trackers said should users be of cautious fitness Scientists .


7. with feel 400 play might got to You you've calories .


8. How tracker many said calories they their burned fitness .


9. properly adjusted Researchers the may user not settings have .


10. study The data incorrect reported have could method .