I’m a personal trainer who's tested products for five years. The best fitness trackers are supposed to enhance your fitness journey, not make it harder. But tracking and interpreting your health data ...

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Nikki Gooding didn’t know what was happening, but something was up. In early December, the 27-year-old aesthetic nurse practitioner had started feeling off. She was exhausted, even though she was ...

Almost 1 in 3 Americans uses a wearable device to track their fitness, according to the National Institutes of Health. And as people shop for last-minute holiday gifts, fitness trackers are a popular ...