Time to shape up! The quantified-self movement is gaining momentum, thanks to a wave of new fitness tracking devices. But, like any diet plan, some fitness gadgets work better than others. The best ones can track your movement (both steps and miles), calories burned and sleep patterns. Others either have built-in heart rate monitors or can be paired with them in order to provide an even more accurate picture of your health.
Any good fitness tracker should come with a smartphone app that you can use to track your progress, as well as log what you eat each day. Some of these gadgets can even double as smartwatches, displaying incoming notifications from your smartphone. Whether you're a reformed couch potato or a marathoner, you have a wide range of fitness trackers to choose from. We've evaluated these devices based on design, performance and ease of use to arrive at our top picks.
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