The Apple Watch Activity Rings have transformed fitness tracking by combining simplicity with powerful tools to encourage healthier habits. By focusing on three core metrics—Move, Exercise, and ...

If you've been working out this year with your iPhone as a companion or with an Apple Watch, there's a beautiful Activity Recap waiting for you. Before you ask: No, it's not Apple that offers a ...

Respiratory rate, another metric in the Apple Watch vitals app, shows how many breaths you take per minute. This typically ...

Oura’s newest wearable is a great alternative to watchlike fitness trackers ...

Jake Peterson is Lifehacker’s Tech Editor, and has been covering tech news and how-tos for nearly a decade. His team covers all things technology, including AI, smartphones, computers, game consoles, ...