Measure your heart rate, step count, exercise performance, and many other vital stats with the best beginner-friendly fitness ...

Today’s health and fitness trackers can measure sleep oxygen levels, stress levels and even glucose levels. They’re increasingly being used as a window into our internal health. Is that a good thing?

Are fitness trackers worth it? What to know about these wearable devices. From smartwatches to pedometers, heart rate monitors to rings — there are lots of high-tech ways to monitor your ...

Everything you need to know about photoplethysmography (PPG), the technology behind heart rate measurements in fitness watches and smart rings.

Unfortunately, syncing processes for fitness trackers vary. Procedures range from fully manual, 10-minute syncing ceremonies to 20-second manual updating to seamless, cloud-based tracking.

We've tested and reviewed products since 1936. Read CR's review of the Polar Ignite 2 fitness tracker to find out if it's worth it.

Do fitness trackers actually help you reach your goals? Unpack the benefits, the research, and what to know before relying on one for your health.

Fitbit's new fitness tracker adds Google features we've all been waiting for The Fitbit Charge 6 offers a sleek form factor and deeper integration into the Google ecosystem. Here's everything new.

We've tested and reviewed products since 1936. Read CR's review of the Garmin Vivomove 3 fitness tracker to find out if it's worth it.

You may already own a fitness tracker to monitor your exercise—but here’s how you can also use it to improve your sleep.