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 ...

Keeping track of your fitness can be challenging. That’s why many people use fitness trackers — high-tech watches that can measure heart rate, blood oxygen, sleep quality, physical activity, and more.

Fine. You didn’t buy a smartwatch. You were never going to anyway. Meet the fitness tracker: a less expensive, more immediately useful tech product that might actually help get your lazy self in shape ...

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Putting on a fitness tracker feels like flipping the switch on a healthier, more active life. With every second of a workout tracked, every beat of your heart measured, and every toss and turn counted ...

One of our favorite fitness trackers *doesn't* live on your wrist. Unfortunately, you can't buy the motivation to get your butt in the gym (or to do any kind of exercise). And fitness wearables alone ...

How resistant the watch is to submersion in water, as tested by subjecting the device to a water pressure equivalent to the depth the manufacturer claims the fitness tracker can withstand. The Polar ...