Knowledge is power when it comes to performance, these picks help you get it.

You'd be forgiven for thinking of a well-known caffeine tablet which was big when I was a university student, but despite the ...

The top-rated GPS running smartwatch, Garmin Forerunner 255, is now available at a discounted price of $243 on Amazon, marking a significant drop of over 30%.

Heart rate variability (HRV) is the variation in the time between two consecutive heartbeats over a specific period. Doctors may use HRV as an indicator for certain aspects of a person’s health, ...

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. December 4, 2025 Add ...

So, you’re looking for a running watch? The Garmin Forerunner 55 is a solid choice, honestly. It’s not overly complicated, ...

One of the best heart rate monitors on the market, with added features, and compatibility for a full triathlon too. You can trust Cyclingnews Our experts spend countless hours testing cycling tech and ...