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Where (and how) you wear your health tracker can impact your data accuracy. Here's what researchers say matters most.

When you buy through our links, Business Insider may earn an affiliate commission. Learn more Fitbit has been a go-to name in fitness tracking for years, and for good reason. The best Fitbits can help ...

Overall this model was very easy to use, very accurate for counting steps, and very good at measuring heart rate accuracy. With recent version iPhones, our experts found it very easy to pair, very ...

Personal trainers, marathon runners and competitive athletes put 23 wearables to the test — this is the best fitness tracker ...