Like every piece of gear you wear on your body day in and day out, fitness trackers are incredibly personal. Not only do they have to be comfortable and attractive, but they must also accommodate your lifestyle and when and how you like to work out. Did you just buy a Peloton, or can you only squeeze in a lunchtime walk? Studies are mixed on their benefits, but there’s never been a better time to find a powerful, sophisticated tool to help you optimize your workouts or just get in a few more steps every day.
Updated March 2021: We removed older picks and added new trackers, like Amazon’s Halo.
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