The Fitbit Air is Google’s new entry-level fitness tracker, and when Google announced it last month, I was immediately intrigued. I had never owned a fitness tracker or a smartwatch before, but the ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Add as a preferred ...

Even though Prime Day is over, a few deals are still going. Notably, these fitness wearables are on sale—Garmin, Fitbit, ...

That’s where pulse oximeters come in. These small devices measure your heart rate and SpO₂. They give you another way to understand how your body responds during exercise and recovery. Also, they may ...

Explore my Withings Body Scan review after a month of testing. Discover who actually benefits most—and who should buy a ...