I tested Google's Fitbit Air against the Whoop 5.0 to see which screen-free tracker delivers better value, comfort, and health insights for everyday users.

Add Yahoo as a preferred source to see more of our stories on Google. Using a chest strap heart rate monitor can give you accurate, actionable insights to help improve your running. What is the best ...

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. July 9, 2025 Add as a ...

If you're in the market for a new heart rate monitor, there's only hours left to save in the Amazon Prime Day sale. This huge savings event has been in full swing over the past 48-hours and we've come ...

Pretty much every fitness tracker and smartwatch has an optical heart rate sensor, but they're not always perfectly accurate.